In this photo taken with a mobile phone a doctor attends to a student from Government Secondary School in Mamudo, at the Potiskum General Hospital, Nigeria, following an attack by gunmen on Saturday July 6, 2013. Islamic militants attacked a boarding school before dawn Saturday, dousing a dormitory in fuel and lighting it ablaze as students slept, survivors said. At least 30 people were killed in the deadliest attack yet on schools in Nigeria's embattled northeast. Read story »