A Philadelphia Police officer is on desk-duty after he allegedly assaulted his female partner and lover during an argument, according to NBC10 sources.

Lieutenant John Stanford told NBC10 the two unidentified 18th district officers got into an argument Friday near police headquarters while they were both on-duty and in uniform. The argument ultimately escalated into a fight.

Sources tell NBC10 the two officers were having an affair and the alleged assault is being investigated as a possible domestic dispute.

According to investigators, the female officer, who has worked in the department for nearly 20 years, suffered facial injuries, including fractures and bruising, and was treated at a local hospital. They have not yet revealed her condition.

The male officer is currently on desk duty and his gun was confiscated pending the outcome of the investigation. Officials with Internal Affairs are handling the case.

"Any time you have a situation like this it's something very serious," Stanford said. "The department looks at it in a very serious way. It's not going to be something taken lightly. Necessary action will be taken once a thorough investigation is completed."

