Houser has been a focus of at least 20 disciplinary investigations since the early 1990s, department records show. The records provide scant detail on the allegations. Most of the complaints resulted in no discipline or a reprimand, but he was suspended several times, the records show. In 1994, for example, he received a five-day suspension in an incident described as a domestic altercation or disturbance that happened when he was off duty, according to the records.