At least three persons of a family were killed and another injured in collision between motorcycle and tractor trolley here in Sargodha on Saturday-Sunday night. According to motorway police, a motorcycle carrying four persons after getting out of control due to over speeding collided with a tractor trolley near Adda Dahouri. As a result of collision three motorcyclists stated to be belonging to same family were killed on the spot and another sustained injuries. The rescue personnel in assistance with locals shifted the bodies and injured to local hospital for medico-legal requirements.