MINEOLA - Video of a victim's final moments was played for jurors today in the trial of a Queens man accused of killing a Nassau police officer.

Retired NYPD Officer Robert Mancini, a key witness in the trial against Darrell Fuller, was off duty and unarmed on the day NCPD Officer Artie Lopez and Raymond Facey, of Brooklyn, were killed.

Prosecutors say Fuller was leaving a dialysis treatment center on Oct. 23, 2012 when he got into a traffic accident and fled the scene. They say he killed Officer Lopez after being pulled over near the southbound entrance ramp to the Cross Island Parkway. They say Fuller then shot Facey and attempted to escape in the Brooklyn man’s Toyota Camry.

Mancini recorded the alleged incident on his cellphone and followed the suspect while on the phone with police. He identified Fuller in court as the man who shot both Lopez and Facey.

In their opening statements, the defense told the jurors not to believe everything the witnesses say.

The trial resumes on Friday.