Donald Trump's campaign office in Denver was subject to two acts of vandalism within 24 hours on Friday. Staffers reported graffiti calling Trump a "thief" and a "pervert" on Friday morning and that night reported a rock was thrown through the office window. Screen capture/The Denver Channel/AOL

DENVER, Nov. 5 (UPI) -- Colorado police are investigating two instances of vandalism reported at Donald Trump's campaign office within 24 hours.

Police said vandals spray painted on a brick wall outside his Denver campaign office and later threw a rock through a window, according to the Denver Post.


The graffiti was reported at 7:20 a.m. on Friday and called Trump a "thief" and a "pervert" while also referring to him using an expletive.

"It's an anti message. We'll investigate it using all the tools we have at our disposal including viewing [footage from security cameras] to determine who did this," Denver police spokesman Sonny Jackson said of the graffiti.

Denver Police spokesman Tyrone Campbell told CNN a possible suspect was being held in relation to the rock-throwing incident.

"We are investigating a second incident of vandalism in the city at Donald Trump's office," he said. "The first vandalism case occurred Friday morning and both cases are under investigation for criminal mischief."

Trump staffers reported the rock came through the window at about 9 p.m. Friday and left a hole about the size of a softball in the window.