(KAIR)--An early Monday evening railroad derailment, in Atchison, caused no injuries but has closed the city's 4th Street railroad crossing indefinitely.

Atchison Police Chief Mike Wilson tells MSC News the accident led to the derailment of six empty coal cars, with no additional hazards resulting from the derailment.

Wilson says his officers were on the scene of the accident, which occurred around 6:35 Monday evening, with the wreckage extending between 4th and 5th Streets in the rail yards.

Other than the derailed rail cars, Wilson says there was no additional damage.

Atchison Fire Chief Patrick Weishaar, in a release, says his department also responded to the scene; but despite an initial report of a fire, found none. He says the train was westbound at the time of the derailment, and came to stop near the 5th Street overpass.

According to Weishaar, the rail company Monday evening was working to remove the derailed cars, but the 4th Street crossing remains closed to traffic, a closure that Wilson says will remain in place "for an extended period of time."

The cause of the derailment is under the investigation of Atchison Police and Union Pacific.