Thousands mourned the death of slain NYPD Officer Brian Moore at his funeral on Friday.

The 25-year-old cop died from severe injuries to his skull and brain after being shot in the face last Saturday while on duty in Queens, New York.

According to CNN, people flew in across the country to support the family of the young cop who had a promising career in the police department. The funeral was held at the St. James Roman Catholic Church on the South Shore of Long Island.

Tens of thousands of uniformed officers stood outside to pay tribute to Moore's memory while hundreds of people attended the funeral.

Following the service, NYC Mayor Bill de Blasio said that Moore, who comes from a family of police officers, took the police entrance exam at age of 17.

"He just couldn't wait to be old enough to join the force," de Blasio said.

"Brian Moore represents the best of New York City. He was brave for sure, but his bravery was matched by his compassion."

The shooting occurred when Moore and his partner, Erik Jansen, were sitting in an unmarked patrol car in Queens Village on May 2 and spotted Demetrius Blackwell, 35, adjusting his waistband. The cops, who were wearing plain clothes at the time, asked him what he was carrying. That is when Blackwell allegedly opened fire, shooting Moore in the head around 6:15 p.m.

Moore was rushed to Jamaica Hospital, where he was pronounced dead.

"I did not know this officer in person in life; I've only come to know him in death," Bratton told reporters outside the hospital, according to The New York Times.

Bratton also described Moore as "an extraordinary young man" and said his death was "a great loss to this profession and to this city."

"He'd already received two exceptional police service medals and two meritorious police service medals," said the commissioner, reports ABC News.