the joint terrorism analysis center has now decided to raise the national threat level from severe to push. the u.n. security council holds an emergency meeting over north korea's missile launches as the international community looks for a way to try to defuse the ongoing crisis. of a vicious circle. the weekend a.t.m. saturday morning here in moscow right now one name is kevin welcome first of this live news update then we're going to america the main story this hour is the protests in the u.s. city of sin louis happening after next policeman was found not guilty of murder following this fatal shooting of a black man last year and police brutality activists have been throwing stones at the mayor's house this last evening in the authorities of tear gas to disperse them to police. versus have been injured in the violence. several dozen protesters blocked an intersection at one point in the city's downtown area earlier and others gathered in front of the police department has been thirteen arrests thus far the mayor school for people to remain calm were also seen vandalizing a police ca

the joint terrorism analysis center has now decided to raise the national threat level from severe to christian.

threat level now to critical meaning that a further attack could well be imminent the joint terrorism analysis center that's the independent organization which is responsible for setting the threat level on the basis of available intelligence has now decided to raise the national threat level from severe to critical the city's mayor has said in the past that living with the threat of terrorism is something that londoners just have to accept these days. it's. going to be things are going to be and so it came to pass as they say that was a year ago the woods preceded a deadly wave of violence and terror in the u.k. and this is looks the spate of attacks britain seen in twenty seven to. get another terrorism related incident in the u.k. a twenty seventeen pandemic of terror with this now the fifth and every attack demands more security measures and public vigilance now that you are you. were. following the van attack on westminster bridge they put up a concrete barriers to prevent a similar salt earlier this month london's metropolitan police came up with another measure to stop the vehicles targeting l

. >> the joint terrorism analysis center, the independent organization responsible for setting the threatevel on the basis of available intelligence has now decided to raise the national threat level from severe to critical. this means that their assessment is that a further attack may be imminent. lucy: the army were replaced police officer's at some locations as hundreds of detectives search for who planted this bomb. >> we are making excellent progress, to identify, to locate and arrest those responsible. and this is a very complex investigation which is continuing at speed with the full weight of the london counterterrorism policing resources. my colleagues around the country and by our intelligence agency partners such as mi-5. lucy: for those who walked out of the tube carriage today there is relief. >> lucky. i can give my wife and kids a big cuddle tonight. happy to be here. lucy: but with a bomber on the run and fears another attack could be imminent, these are tense times for those whose job it is to catch him. jane: the head of counterterrorism and the u.k. says hundreds of det

the joint terrorism analysis center, the independent organization which is responsible for setting thehreat level on the basis of available intelligence, has now decided to raise the national threat level from severe to critical. this means their assessment is that further attacks may be imminent. sarah: police have launched a major investigation following the attack today. so-called islamic state has claimed responsibility, the fifth terror attack to hit great britain this year. >> the bomb exploded on a train at green station in southwest london. correspondent: passengers said loud noises, then a fireball erupted from a bucket near the back of the train. >> and suddenly i heard a big bang. i turned left and i saw the fireball. meanwhile, i heard a lot of ladies screaming and crying. people where panicking. at that time i realized what was going on. correspondent: a number of wires protruded from the bucket. police say it was an improvised explosive device, suggestions that it may have had a timer. some suffered burns, others were trampled in a stampede as people left the train. >> on

back in may what it means and the decision is arrived at through something called the joint terrorism analysis center together with intelligence officials and it basically allows for members of the military and we're hearing that around well the the the military personnel will be deployed to close sites sites that on an open to the public but strategic sites and freeing up the idea is around a thousand arms police officers now they will be patrolling places like london's transport network and that the streets around britain you can probably see behind me parson's green sheep station back open and running we've seen people leave the station in the last hour or so people have been getting used to the sight of more armed officers since the string of attacks let's not forget it was the fifth attack since the start of the year in this country so people i don't think will be alarms to see more officers but it will be another reminder once they see once the threat level has an impact in terms of patrols it will be a reminder of the ongoing threat richelle i realize it's still very early on this only happene

responsibility for that investigation the prime minister held an emergency security beating the joint terrorism analysis center has now decided to raise the national threat level from severe to critical this means that their assessment is that a further attack may be imminent for this period military personnel will replace police officers on guard duties at certain protected sites which are not accessible to the public public will see more armed police on the transport network and on our streets providing extra protection recent attacks in london and in manchester have put the british authorities on heightened alert on the world the choo train attacks back in two thousand and five the so-called seven seven attacks in which more than fifty people died but the advice from politicians and the police is for people to go about their daily lives and across this bar city today that's what most londoners are doing to be phillips al jazeera pass in the street in london. from the same. the cordon around parsons green station has now been relaxed there is still though a large police presence here that's likely to continu

the joint terrorism analysis center, that's the independent organization which is responsible for setting the threat level on the basis of available intelligence has decided to raise the national threat level from severe to critical. this means that their assessment is that further attack may be imminent. in let's get the latest live from london this how are. nina is with us. thankfully no one killed in this incident, but the station has reopened. there's still a lot of questions here for investigators to dig into. >> that's right. let's take a look at the scene behind me. the police presence that was here, significant police presence up until a half an hour or so ago with three or four guarding the station, that has all gone and there's a sense of normalcy here in had this normally quiet west london suburb. but despite all of that, don't be deceived. there is a significant manhunt under way this hour across the british capital and across the rest of the area. it's speculated this device could have been four times more deadly had it gone off than the manchester attack that killed more tha

> so the decision to raise the threat level to critical is decided by what's called a joint terrorism analysis center a fusion center that amalgamates the law enforcement community. the last time it was raised to critical is following the manchester concert held by aryan th a grande. the reason why they've raise t it now is because they know for a fact that there are people out there that were connected to this plot, so the threat has hood to be raised because individuals can assemble one explosion -- explosive device they could potentially assemble others and it may be reduced over time but until authorities complete their investigation it will remain at critical. >> they're characterizing this arrest of this 18-year-old as a significant arrest. they're not calling him a suspect but what exactly does significant arrest pertain to? >> my understanding is that he was arrested by the southeast counterterrorism unit at the port of dover, which is a strong suggest that this individual was trying to flee the uk, probably ending up going to france by ferry. there is an ongoing active investigation, the aut

. >> the joint terrorism analysis center, that's the independent organization which is responsible forvel on the basis of available intelligence, has now decided to raise the national threat level from severe to critical. this means that their assessment is that further attack may be imminent. >> our brian todd is following the investigation of the here he is. >> reporter: flaims emanate from a crudeel built bomb placed by the doorway inside a train on london's underground. officials say it sent more than 2 dozen people to the hospital with wounds like flash burns and singd hair. witnesses say it also caused a stampede of panicked kmurts desperate to get out of the parsons green tube station in southwest london. >> it was every man for himself. >> this wall of fire was just coming towards us. >> reporter: the suspect or suspects still at large. >> a further attack may be imminent. >> reporter: the full resources of scotland yard and british counter troers forces engaged in a manhunt. >> there are many inquiries going on now with hundreds of detectives involved looking at forensic work

responsibility for that investigation the private a star held an emergency security meeting the joint terrorism analysis center has now decided to raise the national threat level from severe to critical this means that their assessment is that further attack may be imminent for this period military personnel will replace police officers on guard. checked at sites which are not accessible to the public public will see more armed police on the transport network and on our streets providing extra protection recent attacks in london and in manchester have put the british authorities on heightened alert around the world the choo train attacks back in two thousand and five the so-called seven seven attacks in which more than fifty people died but the advice from politicians and the police is for people to go about their daily lives and across this vast city today that's what most londoners are doing to be phillips al jazeera pass in the street in london. brian levin is the director of the center for the study of hate and extremism that california state university in san bernardino is joining us on skype from of and