Authorities have evacuated a town in northwestern Minnesota after a freight train collided with a propane truckthat caught fire. State Patrol Sgt. Jesse Grabow says it happened around 12:25 p.m. Thursday in Callaway. The town of about 230 was evacuated as a precaution. The evacuation was to remain in effect until at least noon Friday. The state Department of Public Safety says the propane is being vented and burned off. None of the affected cars carried hazardous materials and none caught fire.