Late-night commuters on Federal Boulevard in Denver may run into some roadblocks after a pair of accidents - one involving a Denver Police officer.

There's a wreck at S. Federal Boulevard and W. Cornell Avenue involving an officer that was taken to the hospital with a possible broken ankle. That intersection is closed at the time of this writing.

A second wreck happened at S. Federal and Yale involving a motorcyclist, police say. Southbound Federal is shut down at Vassar.

The motorcycle rider was taken to a local hospital with serious injuries.

This story is developing. Stay with 9NEWS for updates.