Updated

A Phoenix police officer died Thursday, a day after he was shot while responding to a call about a son stealing guns from his father, authorities said.

Trying to hold back tears, Police Chief Joe Yahner said the memory and service of Officer David Glasser "will be honored from this day forward."

"He embodied what a Phoenix police officer is," Yahner said. "Dave served his community and he continues to serve right now as he is donating his organs for the betterment of people he doesn't even know."

Mayor Greg Stanton called it a dark day. "Our entire city is hurting," he said.

Glasser had been in critical condition since Wednesday's shooting in suburban Laveen.

Investigators say Glasser and his partner responded after a homeowner called 911 and reported his son was stealing guns. The officers parked behind a car in the driveway without knowing an armed man was inside, police say.

The man opened fire when the officers got out of their car. Police returned fire, killing the gunman whose name has not been released, then turned their attention to Glasser.

"They did everything they could to place Officer Glasser in a position of safety and rendered aid," Yahner said. "The officers' actions at the scene were heroic and I'm very proud of them."

Glasser, a 12-year veteran of the department, was married with a young son and daughter.

Arizona Gov. Doug Ducey ordered flags at all state government buildings lowered to half-staff to honor Glasser.