PORTSMOUTH, New Hampshire (CBS) — Police are investigating after someone spray-painted the words “I’m drunk” on the side of their headquarters.

The Portsmouth Police Department said someone painted the graffiti overnight.

“The men and women in blue immediately went to work removing this artist’s thoughtful and insightful creation,” the department wrote on their Facebook page Sunday.

The department is asking the public to let them know if they have any information about who scrawled the late-night message.