Three people were killed and two seriously injured in this district of Madhya Pradesh when the vehicle they were travelling in collided with an oncoming bus, police said on Sunday.The victims, who belonged to Alot town in Ratlam district, were travelling back home from the Simhastha Kumbh Mela in Ujjain city when the accident happened on late Saturday night on Mahidpur road, said an official of Nagda police station.The injured have been admitted to Ujjain district hospital.