Federal authorities say they will not be investigating the Monday derailment of a Union Pacific Railroad train that was carrying Fort Carson equipment home from California. 

4th Infantry Division spokesman Lt. Col. Joseph Payton said Tuesday 13 cars were derailed -five of them catastrophically, near the El Paso County jail along Las Vegas Street. The cars were carrying 15 pieces of Fort Carson equipment. The vehicles belong to the 3rd Brigade Combat Team, which had been at the Fort Irwin National Training Center. 

There were no weapons or hazardous materials on the train, Payton said. No injuries were reported. 

On Wednesday, crews were still working to remove Fort Carson trucks as work continued on the railroad itself. Some of the military vehicles seemed drivable following the crash, but had to be set upright again.

Fort Carson spokeswoman Brandy Gill said all vehicles are expected to be back to base within 24 to 48 hours. A thorough inspection will have to be completed to estimate the amount of the damage. 

 The National Transportation Safety Board said it would not investigate derailment because it only works on incidents to identify protentional nationwide safety issues. 

The Federal Rail Administration is also not investigating the derailment because it not meet the criteria for such work. Union Pacific is responsible for filing its own report within 30 days after the month when the incident occurred. 

The administration did not have any preliminary information about the cause of the derailment. 

Colorado Springs Utilities receives coal deliveries via train and expects a 10-day pause on deliveries to its Ray Nixon Power Plant south of Fountain, spokesman Steve Berry said. 

Utilities has between 130 to 140 days worth of coal, he said.