Millstadt police arrested a Columbia man following a disturbance Wednesday morning at the village’s municipal pool.

Police said they were called to the pool shortly after 11:35 a.m. for a subject creating a disturbance and possessing a knife. While attempting to detain the man, he resisted arrest.

David B. Mueller, 56, of Columbia, was charged with aggravated assault, resisting a peace officer, trespassing and disorderly conduct.