UPDATE (5:35 p.m.)

Casper Police Department spokesperson Rebekah Ladd says officers have not yet determined whether the bicyclist hit the pickup or the pickup hit the bicyclist.

This story will be updated when more information is available.

UPDATE (4:27 p.m.)

One man has been taken to Wyoming Medical Center for treatment after colliding with a pickup truck while riding his bicycle Monday afternoon in Casper.

The man, whose name has not been released, was westbound on 12th Street when the crash occurred at 12th and Conwell.

District Attorney Dan Itzen was at the scene, which is common in such incidents.

Further details were not immediately released. This story will be updated as more information becomes available.

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A bicyclist is said to be in critical condition after colliding with a vehicle in south-central Casper on Monday.

The crash, reported shortly before 3:30 p.m. according to Casper Police Department spokesperson Rebekah Ladd, caused officers to block the intersection of South Conwell and East 12th Streets.

No further information was immediately available.

This developing story will be updated.