we have breaking news from all corners of the globe this morning. new developments on the plane crash in the alps a possible deal on iran nuclear negotiations, a senator under indictment, but we begin this hour with the breaking story out of east africa a hostage standoff and shooting that's left at least 15 people dead at a university there. this is the poster that the kenyan government is now circulating asking for the public's help in finding the man they describe as the mastermind of the attack. meanwhile, this is still an active hostage situation. got new pictures of tanks outside the university. the president of kenya says security forces have been sent in to help resolve the standoff. it all started early this morning when gunmen stormed the school and opened fire on students killing at least 15 but that -- that may be just the tip of the iceberg. as of right now, more than 500 students are still unaccounted for. it is not clear how many may be trapped inside. according to witnesses, the gunmen declared themselves to be