ROCHESTER, N.Y. (WROC) — Officer Sino Seng, who was with Officer Anthony Mazurkiewicz on the night of the shooting that killed his partner, testified Wednesday in the trial of the man accused of shooting both officers.

Officers Seng and Mazurkiewicz were working together on the evening of July 21, 2022. The two officers were inside an unmarked police vehicle on Bauman Street.

While on duty, a man approached the vehicle and opened fire, shooting Officer Mazurkiewicz twice and hitting Officer Seng in his lower body. A 15-year-old girl inside a home was also struck by a bullet.

RPD said that Officer Seng got out and returned fire, but was unable to hit the suspect.

Kelvin Vickers was accused of being the man who fatally shot Officer Mazurkiewicz and injured Officer Seng, among two other homicides. Police said that he was found inside the crawlspace of a nearby home.

The trial of Vickers began in September, with jurors listening to testimonies from police officers and were recently shown surveillance footage of the day and evening the two officers were shot.

The defense has been challenging the District Attorney’s contention that Vickers knew Mazurkiewicz and Seng were police officers, which carries a charge of aggravated murder.

Stay with RochesterFirst.com and News 8 as we continue to update this developing story.