LAGOS (AFP) - A video posted online claims to show the bodies of at least some of the seven foreign hostages believed killed by extremist group Ansaru following their abduction in Nigeria. The grainy and silent video posted on YouTube, and seen by AFP on Monday, appears to show at least four victims. The images match screenshots released at the weekend along with the claim that the hostages had been executed following their abduction last month. The 91-second video is titled in Arabic “the death of the seven Christian hostages in Nigeria,” while an English statement announcing the executions is copied in below.