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　　Marshall with the BBC news.

　　Huge explosions have rocked Chinese port city of Tianjin. State media say 13 people had been killed and hundreds of others injured. The state broadcaster said residents have been moved ten kms from the explosion zone as buildings were collapsing. Our China correspondent John S reports.

　　The scale of the disaster is illustrated by one particular piece of mobile phone video taken from a highrise apartment block. It shows a bright burning glow on the horizon at the distance of 2 km possibly more, and clearly something larger is on fire, then suddenlly another bright flashes and a huge fireball lights up the sky. The man filming can be heard talking excited and then a full 8 seconds later, the forces of the blast rattles the building violently, one can only imagine the effect on the buildings clearly visible in silhouette, much closer to the blast.

　　The UN secretary general Ban Ki-moon has sacked the head of the UN peace keeping mission in the central African public. Mr Ban said the Senegal lead Babacar Gaye was stepped down as the head of the mission. Human rights group Amnesty International has accused UN peace keepers of raping a twelve-year-old girl and killing a boy and his father. Mr Ban expressed outrage over the reports. "I cannot put into words how anguished and angered and ashamed I am by current reports over the years of sexually exploitation and abuse by UN forces. When the United Nations deploys its peace keepers, we do so to protect the world's most vulnerable people."

　　The Croatian Prime Minister Zoran Milanovic says he fears the worst for a Croatian hostage kidnapped in Egypt following reports that he's been killed by militants affiliated to the Islamic State group. Mr Milanovic said he could not be one hundred percent certain that Tomislav Salopek was dead but described the situation as horrifying.

　　United States most senior soldier has suggested the country should consider deploying troops with their Iraqi counterparts. If progress isn't made within months in the fight against Islamic State, the army's chief staff General Raymond Odierno says such policies would have a support rather than a combat role.

　　The president of Chad said Jihadist group Boko Haram has appointed a new leader. President Idriss Deby named him as Mahamat Daoud but didn't say what might happen to the man who's led Boko Haram in recent years Abubakar Shekau. From Lagos, Will Ross.

　　In numerous propoganda videos, Abubakar Shekau taunted the Nigerian authorities but he is not being seen for several months. President Deby didn't say whether Abubakar Shekau has been killed. Last year, the Chad in lead was set to broker peace talks with Boko Haram but the negotiations never happened and were more widely seen as a shame so some analysts would question how much credit to give to Deby's latest comments.

　　World news from the BBC.

　　Police and soldiers in Myanmar have raided the headquaters of the military backed ruling party in the capital Naypyidaw. Correspondent said that factions within the ruling union       Solidarity and Development Party have been engaged in a power struggle in recent months. There have been disagreements between the country's president Thein Sein and the party's chairman who has wished to serve in the next presidential term.

　　The former American president Jimmy Carter has announced he has a cancer. He said he would be rearranging his schedule to undergo treatment. From Washington, here is Gary A.

　　Jimmy Carter underwent a liver surgery last week and now it has become clear that the cancer has spread to other parts of his body. In a statement, he said further details will be made public after he undergoes further tests by his doctors at the hospital Atlanta George. President Carter is 90 years old and is the second living president after George Bush Senior.

　　The boring factions in Libya have ended two days of talks brokered by the United Nations in Geneva. According to the UN, the parties committed themselves to reaching a peace agreement within weeks. The UN envoy Bernardino Leon has urged to strike a deal by the end of the month.

　　One of Venezuelan main opposition leaders Daniel Ceballos has been released from jail and placed under house arrest. He was arrested in March last year for igniting violence during protests against food shortages, high inflation and rampant crime. He is the second leading opposition politician been released this year.

　　The coach of Costa Rica's national football team has resigned a day after he was involved in a fight during a match in Panama. Paulo Wanchope, a former star of the national team said he got angry when a steward denied him access to the pitch. The two men were seen on video exchanging punches before police intervened. One chop said he was pushed first but apologized for overreacting.

　　BBC news.