A 15-year veteran D.C. police officer was found guilty Monday of assaulting an employee of a cell phone store whom he accused of making obscene remarks to his girlfriend.

D.C. Superior Court Senior Judge Patricia Wynn found Ulysses Delaney guilty of the Oct. 7 attack at the store in the 3900 block of Minnesota Avenue NE.

According to court records, at about 6:50 p.m. that evening, two uniformed police officers on bike patrol saw two men fighting on the sidewalk in front of the store.

Delaney told police that his girlfriend — who also worked at the store — had called him to report that a co-worker made obscene and threatening remarks to her. The affidavit says Delaney told police that he confronted Walker, who threatened to get a gun. “I’m gonna shoot your [expletive]. I don’t care if you’re a cop,” Delaney quoted him as saying.

Delaney was charged with simple assault, a misdemeanor. The store’s worker, Curlee Walker, was also arrested and charged with making threats. But in November, prosecutors dismissed the charges against Walker following an investigation.

[Details and video of arrest of officer in cell phone store assault]

Delaney, 43, who was assigned to the First District, was off-duty at the time. Following the incident, Delaney was placed on administrative leave from the force. He is currently on non-contact status, which means he is restricted to the office and is not on patrol.

According to the affidavit, Delaney said he began fighting the store worker in order to stop him from leaving the store and getting a weapon. The store employee told police that Delaney was the aggressor and that Delaney punched him in the mouth.

Delaney is scheduled to be sentenced on April 6. He faces a maximum of 180 days in jail and a $1,000 fine.