NEW YORK - A New York police officer and mother of three was honored at a funeral Tuesday, six days after she was gunned down in a marked police vehicle.

Officer Miosotis Familia, 48 and a 12-year veteran, "died a patriot," New York City Mayor Bill de Blasio said at the service.

"She was killed solely because she wore a uniform," he said. "She was murdered while acting as an agent of peace."

Familia was sitting and writing in her memo book when she was shot and killed early July 5 in The Bronx. The gunman fled on foot and was shot and killed by police.

The slain officer is survived by three children, a 20-year-old and 12-year-old twins, according to ABC station WABC-TV in New York.

Rev. Barbara Williams-Harris, a chaplain with the NYPD, said it's important to lift up her family, the family of blood and the family of blue.

"We're here to lay a hero to rest, but we have to remember the many ways she was a hero. In her service to this city, and her love for her family and all she did for everyone she came across in life," De Blasio said at the service.

Familia died hours after July 4. The mayor said, "She died the night her nation was born. And she died a patriot, defending all of us."

"Back in 1776 it was farmers and craftsmen [who] put on a uniform to fight for freedom," the mayor said. "Centuries later, in that same spirit, [it] was Miosotis Familia who put on a uniform."

She "died for all of us," he said.