SALINA, Kan. (AP) — The Kansas Highway Patrol is offering a $1,000 reward for information leading to the arrest of the person who removed and loosened lug nuts on patrol cars at its Training Academy in Salina.

The patrol says all the lug nuts were loose or missing on all four tires of two vehicles on Friday. On a different vehicle, two lug nuts were removed from one tire and the other four were within a few turns of coming off.

The incidents are believed to have happened sometime between April 20 and Friday.

The patrol says there was no damage to any of the cars and nobody was injured.

The Salina Police Department is investigating the case.