Three people were killed and four others were injured in a head-on collision between a truck and a CNG-run auto rickshaw at Kuripara in Muktagachha upazila of Mymensingh on Friday morning.The identity of the deceased could not be known immediately.Fazlul Karim Officer-in-charge of Muktagaccha Police Station said the CNG-run three-wheeler was going to Muktagachha from Jamalpur in the morning.When the vehicle reached Kuripara, a truck, coming from the opposite direction, hit it head-on at about 7:00am, leaving three people dead on the spot and four others injured.The injured were taken to Mymensingh Medical College Hospital.