A chilling 911 call came from a home in rural Stafford County the afternoon of April 19.
"Hey, can you get an ambulance, a deputy over to 59 Alderwood Drive?" the caller asked.
"Fifty-nine what?" the 911 dispatcher replied.
"Alderwood. A-l-d-e-r-w-o-o-d,” the caller said. “She just attacked me with a knife, and I had to shoot her ... please!"
As first reported by the Fredericksburg Free Lance-Star, the man who made the call is an FBI agent. He was talking about his estranged wife, 42-year-old Julie Serna Gonzales.
When Stafford County deputies arrived, they found her dead. A friend of Gonzales told News4’s Northern Virginia Bureau the mother of two was shot four times -- hit in the head and chest.
An active investigation is underway, a spokesman for the Stafford County Sheriff's Office said. No charges have been filed, and the sheriff's department is not naming the man who made the 911 call, so News4 is not identifying him.
Gonzales lived near Las Cruces, N.M,, before moving to Stafford with her husband and two sons. A friend in New Mexico created a Facebook tribute page called "Julie Strong." Donna Ulibarri-Peralta said she wanted to honor her friend’s life.
"She was such a beautiful person, and anybody who knew Julie, knew what a beautiful person she was. She could make a room light up," said Ulibarri-Peralta.
She is selling "Julie Strong” wristbands and T-shirts through the Facebook page to raise money to set up a college fund for Gonzales's sons, aged 10 and 12. Ulibarri-Peralta said she and other friends are frustrated that two weeks have passed without a decision about charges.
"We're all thinking the same thing, that because he's an FBI agent, if justice can actually get done for her,” she said. “We're very concerned."
A memorial service was recently held for Gonzales in Triangle, Va. A Funeral service is scheduled for May 4 in her hometown of Socorro, N.M.
Follow Julie Carey on Twitter at @JulieCareyNBC