CAIRO—Two trains collided on Friday in southern Egypt, apparently after someone activated the emergency brakes, killing at least 32 people and leaving 108 injured, Egyptian authorities said. Dozens of ambulances rushed to the scene in the southern province of Sohag, according to a statement by Egypt’s heath ministry. The wounded were transferred to four nearby hospitals. Their injuries included bone fractures, cut wounds and abrasions, the statement said. Egypt’s Railway Authorities said the accident happened when someone activated the emergency brakes of a passenger train that was headed to the Mediterranean city of Alexandria. The train stopped abruptly and was struck from behind by another train. The collision caused two cars from the first train to flip over. A plane carrying medical supplies and physicians covering different specializations has been dispatched from Cairo to Sohag, said the health ministry. Local media displayed videos from the scene showing flipped cars with …