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JUST IN: Arlington officer arrested after alleged off-duty assault

Police on scene at the Siena Park Apartments on Friday morning (photo courtesy John Antonelli)

(Updated at 2:20 p.m.) An Arlington County police officer has been arrested and charged with seriously injuring a woman while off duty.

The alleged assault happened early Friday morning at two separate locations along Columbia Pike in Arlington. The police department says the 34-year-old officer and the woman knew each other, though their exact relationship was not described.

The incident started when the pair left a “nightlife establishment” and drove to an area near Towers Park, where police say the off-duty officer, identified as William Hahn, threw the woman to the ground and smashed her phone following a verbal dispute.

They then drove to an address that likely corresponds to the Siena Park Apartments where, according to police, Hahn struck the woman in the face in the building’s parking garage.

Hahn, who was hired by ACPD in June 2020, has been placed on leave without pay and is facing charges of Malicious Wounding and Destruction of Property.

More from a police department press release, below.

The Arlington County Police Department has arrested and charged an off-duty Arlington officer following an assault investigation. William Hahn, 34, of Arlington, VA was arrested and charged with Malicious Wounding and Destruction of Property. He was held without bond.

At approximately 5:08 a.m. on August 5, police were dispatched to the 2300 block of Columbia Pike for the report of an assault with injury. Upon arrival, officers located the female victim outside a residential building suffering from injuries considered serious but non-life threatening. She was transported to an area hospital for treatment and subsequently released. The suspect was located inside a residence in the building and taken into custody.

The investigation indicated the suspect and victim, who are known to each other, left a nightlife establishment and drove to the 800 block of S. Scott Street where they became involved in a verbal dispute. During the dispute, both parties exited the vehicle and the suspect allegedly took the victim’s phone and broke it. The suspect then threw the victim to the ground and physically assaulted her. Following the assault, the parties reentered the suspect’s vehicle and drove to the 2300 block of Columbia Pike. While inside the residential building’s parking garage, a second verbal dispute occurred, during which the suspect struck the victim in the face. The suspect and victim then exited the vehicle and were waiting for the building’s elevator when they encountered the reporting party who contacted the Emergency Communications Center after observing the victim’s injuries.

“I want to assure the community these serious criminal allegations reflect behavior that is unacceptable by any member of our agency and these actions are in direct contradiction to our role as professional law enforcement officers,” said Chief Andy Penn. “We are committed to holding ourselves accountable to the highest standards while remaining transparent to ensure the public’s trust and will complete a comprehensive criminal and internal administrative investigation into this incident.”

Hahn was hired by the Arlington County Police Department in June 2020. He has been placed on administrative leave without pay pending the outcome of the criminal and internal administrative investigations.

This remains an active criminal investigation and anyone with information related to this incident is asked to contact the Arlington County Police Department’s Homicide/Robbery Unit at 703-228-4180 or [email protected] Information may also be provided anonymously through the Arlington County Crime Solvers hotline at 1-866-411-TIPS (8477).

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