Police are investigating an unconfirmed sighting of an alligator in Pennsylvania.

A resident told the Southwest Regional Police Department he spotted what he believed was an alligator in the Monongahela River in Belle Vernon, Fayette County around midnight.

The man told police the animal was six to seven feet long and was swimming upstream against the current of the river.

Officials also determined there was a possible earlier sighting of the animal around 2 p.m. Tuesday.

The Southwest Regional Police Department is working with the US Coast Guard, Pennsylvania Fish and Boat Commission and the Pittsburgh Zoo in the investigation.

If you have any information, please call the Southwest Regional Police at 724-929-8484.

