A three-story school building collapsed in Lagos, Nigeria, on Wednesday, trapping dozens of children inside, the Associated Press reports. Emergency personnel were on the scene lifting dust-covered children out of the rubble. At least a dozen children were pulled to safety after the crash, but it is not yet clear if anyone had died. “For now, we don’t have any word on casualties as we are still busy with rescue work,” said Sani Datti, a spokesman with Nigeria’s National Emergency Management Agency, said. More than 100 people were killed in 2016 when a church collapsed in southeastern Nigeria. Thirty others were killed that same year in another similar incident at a five-story building.