A Mesa police officer faces charges related to domestic violence after he is accused of grabbing two fellow off-duty female police officers by the neck and slamming their heads together in a Scottsdale bar.

Officer Steven Miller, a 15-year police veteran assigned to Mesa's Organized Crime Section, declined to comment about the case, which is pending in Scottsdale Municipal Court.

Miller is scheduled to be arraigned Nov. 12, when he'll answer to three counts of assault and two counts of disorderly conduct. Scottsdale City Prosecutor Caron Close said the charges are misdemeanors, but some are related to domestic violence because one of the women he's accused of assaulting is his ex-girlfriend.

Police reports state that the assault occurred early Sept. 12 at Flicka's Bar, 2003 N. Scottsdale Road.

Miller's ex-girlfriend and another woman, both off-duty Mesa officers, were in the bar when Miller came in with his current girlfriend.

Police said Miller's ex-girlfriend told them that "she and Steve separated about a year ago and he did not take it well."

When Miller's current girlfriend went to the restroom, police said, Miller walked over to speak with the ex-girlfriend, who had undergone surgery a month earlier to implant a pacemaker.

"He came over to her and asked how she was feeling," the report states. "She told Steve she was doing well and that was the extent of the conversation."

Minutes later, the girlfriend returned from the restroom and joined Miller at the bar. After about 30 minutes, she stated "she felt uncomfortable given the situation and decided it was best to leave Flicka's," which is a regular hangout for Miller.

The victims told police that's when Miller approached them, grabbed them from behind the neck and said, "Why the (expletive) are you in my neighborhood?" the report states. He then slammed their heads together.

The ex-girlfriend "was feeling a substantial amount of pain in her neck from Steve grabbing her as well as discomfort in her chest," the report states. "She could tell Steve had been drinking alcohol at the time of the assault."

Miller denied assaulting the women, although it was witnessed by others in the bar, the report states. His girlfriend told police she only saw him "hug" both women by placing his hands on their necks.

The incident sparked an internal investigation to determine whether any internal policies were broken, said Detective Steve Berry, a Mesa police spokesman. Miller has since been reassigned to the department's evidence section pending the outcome of the internal investigation and the criminal case.