This is an archived article that was published on sltrib.com in 2013, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

Passengers heading southbound on the FrontRunner rail line Tuesday morning were forced to exit the commuter train due to the derailment of a nearby Union Pacific freight train in North Salt Lake.

No injuries were reported, but the UP derailment blocked an adjacent FrontRunner rail line about 3 a.m., according to Utah Transit Authority spokesman Remi Barron.

By 8:30 a.m., limited FrontRunner travel north and south had resumed on one of the UTA's two tracks through the area. It was unknown when the remaining track would be cleared and full FrontRunner service restored through the affected area of North Salt Lake.

By 9:45 a.m., the three derailed, empty tanker cars had been cleared and the freight train resumed its route, freeing up nearby FrontRunner lines completely.

During the incident, FrontRunner passengers had been unloaded at the Ogden station and bussed south to Salt Lake City's North Temple station. FrontRunner passengers between the Clearfield and North Temple stations also were affected.

Union Pacific spokesman Aaron Hunt characterized the incident as "a minor derailment" involving three of six empty tanker cars in the short freight train run. The derailed cars remained upright, he said.

He said the cause of the derailment was under investigation.

Twitter: @remims