A pedestrian was killed after a collision with a train along Mason Street on Thursday afternoon in downtown Fort Collins.

An adult male was struck by the locomotive and pronounced dead at the scene, Fort Collins Police Services reported in a Thursday evening Facebook post.

All east-west traffic from Prospect Road to Mulberry Street was blocked for five hours during the investigation, police said.

The crash happened just before 3 p.m., and officials warned that the train, on the BNSF Railway track, would remain stopped for "an extended time."

The police crash investigation team arrived on scene shortly after the collision to investigate, including speaking with several witnesses.

Fort Collins Police Services public information officer Brandon Barnes said the the train was travelling northbound, but it's unclear what the pedestrian was doing at the time of the crash. But investigators don't believe speed was a factor in the crash, police said in theFacebook post.

No other information about the identity of the victim was available Friday morning. The Larimer County Coroner Office will release the identity at a later time.

At 8:30 p.m., Fort Collins police said via Twitter that the train had been cleared from the track and the roads were reopened.

The collision wreaked havoc on the evening commute in Fort Collins, as nearby streets were choked with commuters trying to navigate east-west traffic around the blockage. Traffic delays were evident along College Avenue, Shields Street, Drake Road and other thoroughfares and side streets.