Police said someone spray-painted a swastika on the door of a Montgomery County house that had a Donald Trump sign.
Local news organizations report that an American flag was also stolen from the home of 72-year-old Thomas Roszkowski early Sunday morning.
Montgomery County police said in a statement Monday that they're investigating the incident as a possible case of "hate-biased" vandalism.
Roszkowski says that last month, someone also stole a sign supporting president-elect Donald Trump. He believes the incidents are connected.
Anyone with information is asked to contact authorities.