Jaipur, Jul 1: A passenger bus rammed into a truck and caught fire on the Delhi-Mumbai Expressway in Rajasthan's Dausa district early Wednesday, killing seven people and injuring over 15 others, police said. The accident took place near Dhanawda under the Kolwa police station area. Dausa Superintendent of Police Piyush Dixit told PTI that five victims were charred to death in the blaze, while two others succumbed to severe head injuries.