Angelo West, 41, of Hyde Park, was identified by Boston police as the deceased suspect involved in the shooting of officer John Moynihan Friday night.

A Boston cop whose actions the night of the Watertown shootout with the Tsarnaev brothers purportedly helped save the life of a then-critically wounded Transit police officer was shot in the face Friday night when a would-be routine traffic stop in Roxbury turned into a deadly standoff.

Officer John Moynihan was shot under the right eye during the altercation. He was in critical condition at Boston Medical Center Friday night, “fighting for his life,” BPD Commissioner Bill Evans said.

Saturday police tweeted:

Moynihan, 34, was among those who rushed to the aid of TPD officer Dic Donohue, who was shot and bleeding out during the Watertown gun battle with Boston Marathon bombers Dzhokhar and Tamerlan Tsarnaev days after the April 15, 2013 attacks, Lieutenant Mike McCarthy said.

At about 6:40 p.m. Friday night, police said, members of the Youth Violence Strike Force pulled over a car near Humboldt Avenue and Ruthven Street. As officers approached the vehicle, one suspect stepped out and opened fire on police.

Officers returned fire, fatally wounding the male suspect, identified Saturday afternoon as 41-year-old Angelo West of Hyde Park, who was pronounced dead at the scene. David Procopio, a spokesman for the State Police, said the suspect was attempting to flee the scene when he started shooting at police.

Mayor Marty Walsh said in a statement Friday night:

My thoughts and prayers are with the Officer injured tonight, his family and friends and the entire Boston Police Department during this difficult time. These acts of violence have no place in our neighborhoods. Our community is stronger than ever, and tonight we are thankful for all of those who put their lives on the on the line everyday to protect our City.

Boston Fire extended their thoughts and prayers to Moynihan and his family, and also credited emergency medical services for their efforts.

Boston EMS wrote uniform messages on Facebook and Twitter Friday night.

Two other suspects in the vehicle, both men, were taken into custody on unrelated charges.

A third female victim suffered a non-life-threatening gunshot wound and was transported to Boston Medical.

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