A new massacre by the Boko Haram in Nigeria has left several hundred people dead. Residents and local officials say dozens of Boko Haram gunmen attacked the northeast town of Gamboru Ngala on Monday. At least 336 people were killed and hundreds of homes and vehicles set on fire. Bodies were still lying in the street two days later. The town sits on the Cameroon border and was reportedly targeted because some residents were assisting the Nigerian army.