That's when he found a 29-year-old man pulling on the exterior doors on the south side of the church trying to get in. The man, who appeared intoxicated, told Brooks he was looking for work, court paper say.
Armed with a pistol, Brooks got the man to lie on the ground and called police, the documents state.
Officers arrested the man, who admitted to being "on something." During a search, officers found the man had a bottle of prescription medication that appeared to have been prescribed to another person, the documents state.
The man is being held in the Utah County jail for investigation of public intoxication, drug possession and drug distribution charges. Bail is set at $20,000.
Court records show the man is currently on probation after being convicted of theft charges earlier this year.