KANSAS CITY, Kan. (AP) — The Kansas City, Kansas, police department says it’s investigating after photos surfaced of two officers posing with their rifles in front of a vandalized stop sign.

The Kansas City Star reports the photographs show lettering had been added to a stop sign to read, “Cops STOP murder’n.” The two officers posed for photos in front of the sign with their patrol rifles.

Police spokeswoman Amber Hickerson says the department learned of the photos after a neighbor saw the officers and posted pictures of them on social media. Hickerson did not know where the sign was located but said the vandalized lettering has since been cleaned off.

The officers were not identified.

The department says the officers showed poor judgment and the photos are “disappointing and inappropriate.”