PITTSBURGH — A Pittsburgh man who threw concrete at a police vehicle and injured an officer amid last year's protests over the murder of George Floyd was sentenced Wednesday to a year and a day in federal prison.

George Allen, 31, will also have to serve three years of probation after he's released. He had pleaded guilty to obstruction of law enforcement during a civil disorder.

Allen threw “multiple pieces” of concrete at an occupied Pittsburgh police vehicle that was parked on a city street during the protests in downtown Pittsburgh on May 30, 2020, prosecutors said. One piece shattered the front passenger window and hit an officer, causing minor bruising to his arm.

U.S. District Judge Arthur Schwab, who handed down the sentence, said Allen can remain free on bond until he reports to prison on Feb. 1 to start his sentence.