WICHITA, Kan. (AP) — A former Wichita school safety supervisor who also is an ex-police sergeant will go to trial on eight charges accusing him of sex crimes against three boys.

The Wichita Eagle reports 52-year-old Alex Robinson was in court Wednesday, where a judge determined there is enough evidence to order him to stand trial.

Robinson’s attorney asked that that not-guilty plea be entered for his client, who showed no emotion and looked straight at the three witnesses during the hour-long preliminary hearing.

The witnesses — a 13-year-old, 17-year-old and 26-year-old — testified that Robinson groped or sodomized them when they were younger.

Robinson spent 22 years with the Wichita Police Department before going to work with the school district in 2006.