(AP) -- An Army staff sergeant charged with killing his wife and a northern Virginia police officer who was on her first day on the job is being held without bail.
Hamilton is accused of shooting and killing Officer Ashley Guindon after she answered a domestic violence call at the Hamilton home Saturday evening. Two other officers were hospitalized with injuries.
Hamilton is an active duty Army staff sergeant assigned to the Joint Staff Support Center at the Pentagon, according to Cindy Your, a Defense Information Systems Agency spokeswoman based at Fort Meade, Maryland.
The shooting occurred Saturday evening at Hamilton's home in Woodbridge. Hudson said Hamilton and his wife, Crystal, were arguing and she called 911.
Crystal Hamilton, 29, was also fatally shot by her husband before police arrived, Hudson said. The officers were shot shortly after their arrival, and when additional officers arrived, Hamilton surrendered and came out the front door of the house.
Police said their 11-year-old son was at home at the time of the shootings. He is now being cared for by relatives. Police recovered two guns from the scene: a handgun and a rifle.
The injured officers were identified as Jesse Hempen, 31, an eight-year veteran of department; and David McKeown, 33, a 10-year veteran. They are expected to recover, Hudson said. Details about their injuries were not released.
Officer Brandon Carpenter at the county's adult detention center says Hamilton is being held without bond at the jail on charges that include murder of a law enforcement officer, first-degree murder charge, two counts of malicious assault and two counts of use of a firearm during a felony.
Hamilton is scheduled to be arraigned Monday morning.
At Inova Fairfax Hospital, where the three officers were flown by helicopter after the shooting, more than 100 patrol cars lined the roads outside early Sunday morning to stand vigil.
On Sunday night, a vigil was held at the county complex honoring Officer Guindon. Hundreds turned out to pay their respects.
AP writer Lynn Tuohy contributed from Concord, New Hampshire.