The vandalism occurred around 8 p.m. on Friday at attorney Michael van der Veen's residence in West Whiteland Township, Pennsylvania, about 30 miles southwest of Philadelphia, according to police.
Pezick said private security has since been hired by the homeowner to protect the residence, and police presence has been beefed up in van der Veen's neighborhood.
He said the graffiti was the only vandalism officers found on the van der Veen's property.
Van der Veen spent the week in Washington, D.C., defending Trump at his impeachment trial related to the Jan. 6 attack on the Capitol building.
Van der Veen, a personal injury lawyer, spoke briefly of the incident during an interview Saturday on Fox News.
A group of demonstrators gathered over the weekend outside of van der Veen's law office in downtown Philadelphia, according to the Philadelphia Inquirer.
During the protest, demonstrators called van der Veen a "fascist" and chanted, "When van der Veen lies, what do you do? »