this is bbc world news today. i'm kasia madera. our top stories: another arrest has been made in connection with manchester's suicide bombing. british police believe they have made "immense progress" in the manchester suicide bombing investigation with many significant arrests. they are very significant, these arrests and we are very happy we have got some of the key players we are concerned about but that is still more to do. the egyptian president says the army has targeted a jihadist training camp, in retaliation for an attack on coptic christians which killed 28 people. we understand the president said the government will take the utmost measures to guarantee the safety of christians but a lot of people here do not believe that very much. tough talks at the g7 as leaders reach agreement on extremism — but no deal on climate change as the us mulls over its position. the bbc gets exclusive access to incredible footage showing what young western explorers discovered

nearly 100 years ago. british police have made another arrest in connection with the terrorist attack in manchester. a total of 11 people have now been arrested. despite progress in the investigation the terrorist threat in the uk remains at a critical level. and already vast investigation, still expanding. each day counter—terrorism detectives raid more

properties in manchester, cutting through the shutters of this moss side barbershop. it was run by this man, a cousin of the manchester bomber. forjani was arrested earlier in the week with at least one of his brothers. police also raided another house in the middle of the night, bringing the number of people in custody to eight, all men, mostly libyan and aged between 18 and 38. they are very significant these arrests. we are happy we have our hands on some of the key players we are concerned about. there is still a little bit more to do. the bomber, salman abedi, came back to manchester from libya last week. renting a flat in this block, he had bought many of the ingredients for his device. it was here he spent his last weekend, putting his bomb together, making the final preparations to attack a concert for teenage girls. detectives say they have made very significant finds and crucially believe they have captured a large

part of his terrorist network. we have hundreds of officers that are working on this investigation from across the national counterterrorism police network and we have seized thousands of exhibits which are now being assessed. i think it is fair to say there has been enormous progress with the investigation but still a lot of work to do. i understand the finds include bomb making chemicals but because of concerns about what might be still out there, the threat level will remain at critical. the home secretary says people can expect much higher security at the 1,300 events across the country this bank holiday weekend. i hope that they will take comfort from that, be able to feel more secure because we must not let this terrible terrorist incident impact on our lives. let us carry on this bank holiday weekend with our family and friends. already people getting away for the weekend can expect to find armed officers patrolling trains

outside london for the first time. as the investigation into salman abedi's atrocity continues, we learn more about his father who was detained in libya this weekend. he is believed to have had strong connections to this man, abu qatada, who was suspected of being a senior al-qaeda member in london. this businessman says the bomber‘s father was always seeing abu qatada in the capital. he was one of his supporters this man told us. whenever he went to london, they used to meet up. detectives do not pretend to have the full picture yet, they are growing in confidence, but for now, going into one of the most important weekends of the summer, everyone is nervous. daniel sandford, bbc news, manchester. ariana grande has issued a fresh

statement. all of those who died in monday's attack have now been named. megan hurley, who was just 15 years old, is the 22nd victim. the bbc‘s danny savage reports from manchester on a community grieving for lost family and friends. people queued to buy flowers in remembrance of strangers. it was inconceivable to try and understand how hard the families are feeling, especially with the children. it is shocking. martyn hett was murdered

on monday night. the outgoing coronation street superfan was well known online. as these possibilities got less and less you still had some hope there would be something and when we got the call that confirmed he had died in this explosion it is indescribable, your world just collapses. the final and 22nd victim was named today, 15—year—old megan hurley. her brother was also seriously injured. a note on the family business only hints at the enormity of the tragedy. a picture of a horror which faced first responders has also emerged. 0n the right is paramedic adam williams who is worried about the long—term effect on him and his colleagues. that is a big concern for us all, possibly myself, there will be some permanent scars there. emotionally. and i do worry my colleagues

will suffer the same. there is a sombre and respectful atmosphere here. it may be four days since the atrocity but that is the blink of an eye and people are trying to come to terms with what happened and coming to pay their respects. 22 lives lost, countless others changed for ever. families left with just memories of those who will never come home. a development from egypt, the president says the army has targeted at jihadist president says the army has targeted atjihadist training camp in retaliation for an attack on coptic christians. six air strikes were directed at a camp in libya. this is where the egyptian government believes that militants responsible

for the attack on coptic christians we re for the attack on coptic christians were trained but as yet no group has claimed responsibility for the attack in which at least 28 people we re attack in which at least 28 people were killed, including many children. they were pilgrims. this is the third major attack on coptic christians in egypt in recent