Someone vandalized an Obama campaign building in Des Moines by spray painting the words “Muslim Lier” on a large banner, police said.

The word “liar” was misspelled on the sign, officers said.

The blue banner is 16 by 8 feet and hangs on the south side of the building at 2307 Hubbell Ave. The words were written with red spray paint, police said.

The vandalism occurred sometime between 11:30 p.m. Wednesday and 10 a.m. Thursday, when it was discovered, police reports show.