MADISON, Wis. (AP) — Two Democratic senators are demanding that Army officials investigate allegations that leaders of a reserve unit mishandled sexual assault complaints and ignored protocols.

Illinois Sens. Dick Durbin and Tammy Duckworth sent a letter to Army Secretary Ryan McCarthy on Wednesday demanding the review.

The senators cited an Associated Press story last week about allegations that commanders in the Illinois-based 416th Theater Engineer Command improperly opened internal investigations into at least two cases, failed to hold monthly sexual assault management meetings and suspended a victim advocate who reported the shortcomings to Army investigators.