Published: Aug 20, 2010 5:23 PM EDT
Updated: Aug 20, 2010 2:23 PM EDT

MIAMI (AP) - A man reportedly riding a bicycle with a shotgun has been shot and killed by Miami police.

Police say officers and federal agents spotted two men riding bicycles shortly after midnight Friday in Miami's Liberty City neighborhood. One of the men was carrying a shotgun.

According to investigators, a Miami police officer and a federal agent each fired a shot that struck the armed bicyclist.

What prompted the officers to fire was unclear. Detectives say the two men may have been involved in an earlier robbery.

The bicyclist was transported to a hospital, where he died. The other man fled into the neighborhood but was later apprehended.