Anti-government graffiti was painted on the Michigan Republican Party headquarters amid debate over a possible nationwide immigration sweep to deport people living the country illegally.

State party officials say they discovered the graffiti, which included an expletive and the acronym �ICE� for Immigration and Customs Enforcement, on the front of the Lansing building Saturday evening. They reported it to Lansing police, who say it�s believed to have been painted early Saturday.

The Michigan Republican Party says the vandalism may have been a personal attack on Chairwoman Laura Cox, who served a portion of her career as an ICE agent. She posted Sunday on Twitter about the vandalism, saying she and her staff won�t be intimidated by the �criminal act.�

Police are soliciting tips from the public in the investigation.

(AP)