WASHINGTON — A supporter of President-elect Donald Trump found a swastika spray-painted on the front door of his Montgomery County, Maryland, home early Sunday morning and now police are investigating it as a possible case of “hate-biased” vandalism.

Thomas Roszkowski of the Four Corners area of Silver Spring, also reported to police an American flag that had been hanging from a tree in yard, had also been stolen.

Roszkowski said he thinks the vandalism is connected to previous incidents, including the theft of a “Trump/Pence” election sign from his front yard late last month.

“First they stole my yard sign, then I got a bigger sign,” said the Vietnam veteran, 72.

His house, which is located across the street from Blair High School, was egged a few weeks later.

Sunday, a day after taking the signs down, he found the swastika while taking his wife to church.

“I’m not going to be intimidated by this BS,” Roszkowski said, “and that’s all this is. It’s just anarchy.”

In a statement released Monday evening, Montgomery County police said detectives believe Roszkowski’s political affiliation “may be the motive for these thefts and vandalisms.”

Anyone with information is asked to contact the 3rd District Investigative Section at 240-773-6870. Crime Solvers of Montgomery County is offering a $10,000 reward for information that leads to the arrest of the suspects. Tipsters can call Crime Solvers toll-free at 1-866-411-TIPS (8477).

WTOP’s Dick Uliano contributed to this report from Silver Spring. Jack Moore contributed from Washington.