BRANDYWINE, Md. — An off-duty police officer who answered a neighbor’s request for help in a domestic dispute was shot and killed Wednesday in Maryland, officials said.

The suspect in the officer’s shooting was later shot and killed by police after a chase.

Prince George’s County police Chief Hank Stawinski said Officer Mujahid Ramzziddin left his home in suburban Maryland to help a woman who lived a few doors away and was confronted by a man with a shotgun.

‘‘He stood his ground,’’ Stawinski said at a press conference. ‘‘He saved her life by giving his own.’’

The man who shot Ramzziddin, identified by police as Glenn Tyndell, 37, of Brandywine, then fled the scene in a vehicle. Stawinski said the chase carried briefly into neighboring Charles County, and ended when the suspect was shot and killed by two Prince George’s County officers.

Stawinski said the initial shooting occurred at about 10:30 a.m. Wednesday in the Brandywine area, about 15 miles south of the nation’s capital.

Ramzziddin, a married father of four, had been with the department for 13 years.

associated press