The Alameda County Sheriff's Office has identified the man accused of killing his domestic partner in a ranch house in rural Livermore on Sunday afternoon.
Gregory J. Stephens, 38, was arrested on suspicion of murder after tense negotiations with authorities following the shooting death of Kellie Henry, 51 -- who was seen dead near the front door while Stephens was allegedly holed up inside before surrendering to deputies.
"Our hearts go out to the family and friends of Kellie," ACSO officials said on Monday in identifying both suspect and victim for the first time, as well as elaborating on their familial relationship as a domestic partnership.
Details about a motive or other circumstances in the fatal shooting were not immediately clear.
The situation unfolded just before 2:30 p.m. on Sunday at a house in the 9200 block of Tesla Road in unincorporated Livermore, located near the Cross Road intersection in the Livermore Valley wine country
Sheriff's deputies were responding to a report of a man having shot and killed a female family member, according to Sgt. Ray Kelly.
The sergeant alleged that Stephens contacted other family members and confessed to the shooting, and the family members in turn called 9-1-1 while Stephens was threatening suicide after the killing.
Deputies arrived to see Henry down and unresponsive near the front door with an apparent gunshot wound and Stephens moving in and out of the house, according to Kelly. Authorities believed Stephens was armed and had access to other guns inside, so additional units were called in including drones and robots and a crisis intervention team to negotiate with Stephens.
After sheriff's investigators made contact with Stephens, he agreed to surrender without causing further harm and then emerged from the home with his hands up at about 5:15 p.m., according to the sergeant. Henry was pronounced dead at the scene.
Stephens has been booked into Santa Rita Jail in Dublin on suspicion of murder, according to Kelly.