STORY: Dramatic pictures from Greece. At least 26 people were killed in a collision between two trains late Tuesday evening, according to rescue workers. Dozens more people were injured, the spokesman for the fire brigade said on Greek television early Wednesday morning. The search for survivors continues. A passenger train traveling from Athens to the northern city of Thessaloniki and a freight train traveling from Thessaloniki to Larissa – collided head-on near the city of Larissa. A total of four wagons derailed and at least two caught fire. The first two wagons were almost completely destroyed by the impact. According to local media, around 350 people were traveling on the passenger train. The exact cause of the accident is still unclear.