reports of arrests a day after chain bombings jakarta killed seven people including five attackers. you're watching al jazeera. also on the program. >> they use it as a weapon of war, food as a weapon of crime >. >> yes. i am angry republican presidential front runner in a prime time

debate in weeks before the first contest in iowa. >> reporter: i'm in new delhi in one of the most polluted cities in the world indonesia media report say three men have been arrested south of jakarta, but their connection to thursday's series of attacks, that is still being investigated. police say they're still looking for the main suspect. i.s.i.l. claimed responsibility for the kwootd attacks in which seven people, including five of the gunmen, were killed. the heart of jakarta's central business district, including the police station and a coffee shop were targeted. what is the reaction the morning after this awful thing happened? >> reporter: yes. well the reaction is both in

television and the media. we see many of the national newspapers with headlines like this. it means indonesia on level one or high alert. an artist's impression of the site with a professor of the president visiting the scene and also a suggestion as to who might be behind this attack. it has to be said amongst all those numbers that you've just given out that there were two civilians also killed and as many as 20 people injured. the security minister has been speaking to al jazeera and to my colleague and we will see that later, but he has suggested that there was a mastermind here also on indonesia soil coordinating that attack. that individual is on the run and also the wife of one of the attackers, we're not quite sure whether he means one of the dead attackers or one that may have

got away, there may have been more in the area is the suggestion, that is being vested, has been arrested. there's lots of many questions to be answered, but the focus is on what individual, a man known for the security forces, was arrested for illegal possession. he seems to have left indonesia and headed towards syria believed to be based in raqqa and is thought to be the mastermind behind the attacks here in jakarta and possibly one of the individuals trying to gain preference with the hierarchy of senior is leaders our correspondent reporting from jakarta. thank you.

the indonesia government needs to look at how to prevent people joining groups from i.s.i.l. and figure out what is driving them to do it. >> i think we are seeing a shift from attacking the soft target as you mentioned early, individual inspired by islamic state, so they carry out bombs and grenade, but in terms of capability, i don't think that they are capable enough, but the danger here we are seeing an individual who believe and is inspired by islamic state cause in indonesia. they are willing to die for the cause. i think in terms of security, yes, the government is capable to understand the threat of coming from the group. they were very effective since the first bali bombing, they

have arrested 1200 suspects, terrorists, and in jail. the they have to deal with the preventive aspect of terrorisms. what shall we do for young individual joining radical group. the second is for the disenchanted, what to do them. what to do with them the u.s. republican presidential hopefuls have been taking part in their sixth round the debates. front runners donald trump and ted cruz clashed on stage with two weeks to go before the first contest, the iowa caucus. we started off the news cast with the clip of donald trump

talking about how angry he is. could you put that in some context for us, give us some highlight highlights? >> you're talking about a two and a half hour debate and we know that we're getting closer to the iowa caucuses because the exchanges became a lot sharper and angrier. up can see where the candidates the threat is coming from with who they turn their fire on. donald trump is concerned about ted kruz and there was a heated exchange over there. we saw mike huckabeeing and ted cruz. we also saw chris christie tea and marco rubio have some real exchanges. i think this was very interesting in that we got to see more clearly than we have in any of the previous five debates

some of the clear distinctions between the candidates on key issues such as national security and how they would handle the threat of i.s.i.l., but not only that, on the key issue of immigration and whether or not they would take the lead from donald trump and ban muslims from the u.s. this was an idea he float a few weeks ago whereas people like -- his time has come and we should look at it in more detail. i think if the viewers were told there were significant number of viewers here in the millions watching this debate, they will leave with a clearer idea of which candidate, perhaps, meets their expectations of the republican medical nominee and perhaps a president. this was a clarifying debate did you see a break-out performance or is it too difficult to know?

>> reporter: i think for some of the candidates, john kasich and ben carson, they did not have good nights. i think then if you look at who did well, then ted cruz was doing exceptionally wl until the last 15 minutes and then he came under attack from marco rubio. marco rubio was clearly prime and came back kram back strongly and ted cruz for the first time in any of these debates, and he seems to be the best debater of them all, looked rattled. donald trump had a few problems, but he regained his footing. for the first time in all six debates donald trump was booed in the hall for some people there. that was interesting. jeb bush had the strongest performance but it may have come too late. this was a man who was standing at 24% in the polls and now standing at 4%.

chris christie did okay. he had good moments, but this race looks as if it's narrowing down to three or four candidates. we're 18 days away from iowa. at the last poll we see ted was leading donald trump was second marco rubio is third and down to those three when it comes to the votes who will go forward and seek the nomination and then you start the fight. you've got two nonestablishment candidates, for want of a better phrase and ted cruz and donald trump. this is going to be hugely interesting because it's going to see exactly where the republican party in the u.s. is at the moment and which path it wants to take. the path by marco rubio or the outsiders like cruz and trump thank you for that. the u.n. secretary general has

warned the war sides in syria are using starvation as a weapon. ban ki-moon has called it a war crime. the u.n. security council is going to hold an emergency meeting on friday to urge the syrian government and rebel factions to end their issues. >> reporter: more aid is finally delivered to the starving people of madaya, a town blockaded by the syrian government. this is the second delivery of food and medicine this week, but before that the town was cut off for three months. at least 28 people died from starvation. in some of his strongest comments yet after almost five years of war in syria, the u.n. secretary general ban ki-moon told the u.n. general assembly this was a war crime >> the town has been the victim of deliberate starvation. let me be clear. the use of food as a weapon of

war is a war crime. all sides, including the syrian government, which has the primary responsibility to protect syrians are committing a atrocious acts. >> reporter: he said 400,000 people were cut off from food and assistance and they should be on the agenda and syrian peace talks in geneva due to start in ten days. >> i think in addition to political negotiation is how to deliver humanitarian assistance without any impediment. that should be discussed. this is a very important confidence-building measures. >> reporter: the u.n. security council will be meeting to does discuss the besieged areas in syria in an open session on friday and despite the fact that

ban ki-moon has described these as war crimes r the council won't be taking any action on that. a referral to the international criminal court requires a vote by the security council and it's certain on an issue like this that russia and china would use their veto an attack near a police station in south-eastern turkey has killed at least six people. it happened in the cinar district of the mainly kurdish province. the prime minister says the forces have killed close to 200 i.s.i.l. fighters in response to the attack. turkish tanks and art illee are said to have targeted in syria and iraq. turkey will not hesitate to carry out air strikes if necessary against i.s.i.l. it is said. iranians say television says nuclear experts have finished removing the core of iran's only

heavy water nuclear reactor. the modification was agreed to as part of a nuclear deal with world powers. it means the reactor won't be able to produce enough plu tone yum for reactors. -- plutonium coming up from come dehouse to the presidency. guatemala's leader gets serious about pulling his country out of a rut. plus. >> reporter: it's one of the biggest dinosaurs ever discovered, so big it barely even fits in this museum. that story coming up.

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welcome back. you're watching al jazeera. let's take a look at the top stories now. the indonesia security minister says police are looking for the main suspect in thursday's attacks in jakarta. five gunmen were killed. the report says three mean have been arrested south of jakarta. the connection to the attacks is still being investigated. the u.n. secretary general says the use of starvation as a weapon in the conflict is a war crime against international law. an estimated 400,000 people are living under siege in syria. the u.s. republican presidential hopefuls have been taking part in their sixth round of debates. front runner donald trump and ted cruz clashed on stage with just two weeks to go before the

first contest. of course, that is the iowa caucuses. our political analyst joins us. it seems that every debate is more important than the one before because you put into context for us just how important this particular debate was. >> this is the most important debate so far because it's only a couple of weeks from the first time actually real people vote. it feels like this has been going on for years, but nobody has voted. we've also lost about four candidates who have dropped out, but we're all waiting for the moment when real voters actually vote absolutely. what is it that we actually witnessed tonight, that the types of attacks, the back and forth. what is it that these candidates are really trying to do? >> well, we did see ted cruz stand up to donald trump and criticizing him and attack him. donald trump got as good as he got. this is the first time we saw

one competitors standing up to donald trump and it was ted cruz. trump didn't collapse. that's going to be in the hands of voters when they start to vote. in this will be a show down between trump and krus and marco rubio may be in there too the video that we're showing just a moment ago was a clip of ben carson. is there anything he can do for himself at this point? he has had such a huge drop in the polls? >> me has had a big drop. part of that was the result of the tragedies, the attacks in paris and california when a lot of people said, wait a minute, he doesn't have any experience in diplomacy, foreign policy, he is in a renowned position but does he have experience to run a country at such time. i'm not sure that there's much he can do to turn that around were there any policy moments that came out of this

debate? i know there were a lot of tactical things, but were there any policy moments? >> i think you saw an interesting policy issue on immigration. there are candidates willing to say trump's idea of it deporting immigrants is an unrealistic idea. you're seeing some split over that. you're seeing some pretty harsh attacks, this isn't policy, but the attacks on hillary clinton are just beginning. what these candidates did was to say the united states has lost its authority and prestige overseas. we're going to restore it. the question is are the americans willing to support candidates who might take the u.s. into another war that is a very good question. thank you for that. always great to talk to you guatemala's new president jimmy morales has been sworn into office.

the former tv comedy won elections in october capitalising on public anger over a corruption scandal. a report on the expectations facing him. >> reporter: back on the streets hundreds of protesters mashed to guatemala city park. six months ago citizens groups were aiming to take down a president accused of corruption. now they're here to send a message to guatemala's new president. >> translation: this year we are starting by demanding that the government is transparent and that it is honest like it should be. this is our main objective. >> reporter: jimmy morales was sworn in as guatemala's president on thursday afternoon. the 46-year-old former tv cometic told the press that he would fake the country on anyway course. >> translation: -- take

>> translation: a new guatemala is possible and it is worth the struggle. things could be better, but i want you to bear in mind things don't change overnight. only we can create that change. we are passing to corruption to the dawn of transparency. >> reporter: his lack of political experience was his best weapon in a country battered by a series of corruption scandals that brought down top politicians, including the former president. analysts say jimmy morales won't have much time to make good on his promises to fight corruption and rebuild public trust. >> it is the make or break year definitely. we are finally going to know what jimmy morales is made off. we're going to know if he was able to make up april team of people who are going to support him, support his position. >> reporter: jimmy morales will be under scrutiny both nationally and internationally. his greatest obstacles might come from within guatemala's

political system. it is here in congress that his future will likely be determined, but his party having less than 10% of the seats, it will be incredibly difficult to push through any significant reforms. with thousands of people planning another demonstration on saturday, guatemalas say their people's movement is here to stay. a message being sent loud and clear to the country's new president. david mercer a politician from southern - the german southern stath of bava rishgs says that his district cannot cope with the refugees and some have been sent to angela merkel in protest. a bus carrying 31 syrian refugees arrived on thursday night. peter dyer said he told the chancellor last month that the town was reaching its capacity

forrous housing these people. one million refugees arrived in germany last year a man has be 49 year old wa convicted of a charge of endangering life because he hid a girl in a van without a child safety belt. he was given a fine of $1,000 which he will have to pay if he is convicted of another fence. eight workers in calais say the government is preparing to dismantle a third of the refugee camp. up to two thousand people live at this makeshift camp. the local authorities are encouraging people to move into new accommodations where shelters have heat and have electricity, but many are afraid to leave as each person needs to register a palm print in order to get an access code. the refugees fear it could be used to control or even deport them.

a driving bay in more than a million cars off the road is coming to an end the temporary reduce was used to lower pollution levels in new delhi. it will take more than 15 days to get rid of the smog that is in that city. >> reporter: many commuters drive to work alone here. there is a lack of public transit in many areas and car pooling is not popular. that's why on many winter days the city looks like this and the roads tlik. turning short trips into long journeys. that is why the state government brought in a 15-day trial of an alternating ban on cars, restricting those with even number day to one day and the odd numbered plates to other. a man taxi a taxi and has noticed a distance in his community. >> it takes less time to reach the office.

it was taking about an hour and 15 or 20. i'm able to reach the office in 45 minutes. that's good for knee. >> reporter: police have fined thousands of people for violating the bans but most have followed it. the effectiveness is still in doubt >> reporter: pollution levels in the city has gone down according to government figures. some argue is may have as much to do with the weather as with the ban. others say the focus shouldn't be on vehicles when other sources of pollution are present >> people will start finding alternatives. >> reporter: only a small portion is from vehicles. >> there are other areas in the surrounding towns. you have industries using coal, you have brick urns. they all contribute to the

problem. >> reporter: many environmentalists say overall police station cannot go down without including vehicles in a broader plan. >> to intensify public transport services, which clues metro, buses, organized taxis and sharing. that is the kind of system we really want to make for the city which should be sustained even after the program is over. >> reporter: this man says his maintained gasoline carry hits a pollution that the diesel taxi that he drives at least 14 people have been killed and several injured in a bus crash in central japan. this happened near the resort town of which is 171 kilometers from the capital.

a bus skidded down the mountain side. the u.s. has transferred 10 d.n.a. yess from guantanamo bay to another area. they have been held for more than 10 years without charge or trial. a number of the prisoners has fallen below 100 since the first time since it opened in 2002. obama had promised to close the you p jail when he came into office seven yees ago. three more men have been found being guilty in the largest robbery in british history. the grandpa gang sole from hatten garden last april. from hong kong to godzilla new york has had its share of big animals. >> reporter: unveiled to the

public for the first time one of the biggest dinosaurs ever discovered. at 37 metres this dinosaur is so long it can't even fit all the way in the museum galilee so the head sticks out the door. it is the first of its kind ever discovered. scientists don't have an official name for it. so until then they're calling it the titanosauur. they're not shaur if it's male or female. they know when it roamed the earth nearly a hundred million years ago, it weighed 70 tons or the equivalent of ten african elephants. i'm tall, but as you can see i only come up to the knee of this one. the crazy part is they believe that when this dinosaur died it was only an ad lessant-- at ol esentity-- adolescent not a full

grown adult. it was unearth in argentina in 2010 and took a team 18 months to excavate the more than 200 bones. unlike most huge dinosaur remains were only fragments are left, this dinosaur was 70% intact. >> you need a complete skeleton to start to understand these animals as living organisms and this is what we can do that. with this highly complete skeleton we can for the first time to answer those questions >> reporter: some of the remains were sent to a laboratory in canada where a cast of the entire dinosaur was made. a team of workers at the american museum of natural history in new york then put the dinosaur back together, an arduous task unlike anything the museum has ever undertaken. the giant is now on display for young and old to gaze at and

admire opening a window into unopened questions on how the biggest big lived and how they eventually died our website is aljazeera.com. thanks for joining us, i'm joie chen. it's a welcome announcement. the world health organisation announced that west africa is officially ebola free.