ROUND ROCK -- Police have released the names of the victims and officers involved in Sunday evening's deadly double shooting on Nicole Circle.
Police say 20-year-old Jonathan Demarco was shot and killed by officers after he reportedly killed 23-year-old Sarai Alexis Valdez.
Both Crime Scene Investigation and Logistics teams arrived Monday morning to inspect, measure and survey the crime scene.
They were doing what they call an "article search," looking for any evidence they haven't yet collected. A canine supervised by an officer with the Bureau of Alcohol, Tobacco and Firearms began searching a plot of deep grass in the front yard of the house. Police also brought in lawn movers and weed wackers.
Police say it all started Sunday evening. They arrived just after five to find Sarai Alexis Valdez on the ground in the driveway. They say Jonathan Demarco was holding a gun, and when officers asked him to drop it, police say he pointed it at them and the officers both fired, killing Demarco.
"It is a difficult thing for anybody to do, but officers are trained for this kind of eventuality. Their job is a dangerous job every, single day," said Round Rock Police Chief Tim Ryle.
Police say Demarco and Valdez had been dating but recently broke up.
Valdez had just moved in with her friend a week ago. Her friend told KVUE off camera Demarco had broken up with the victim and that several times prior, he had beaten her up.
"They were having some problems. They were boyfriend and girlfriend," said Round Rock Police Officer Donell Carter. "She was staying with a friend. Not sure how he knew she was here, but he arrived here on scene yesterday, and that's where the incident took place."
There were children inside the home when the shootings happened outside. They did not belong to Demarco or Valdez but to the woman who lived in the home.
Round Rock police officers Tracy Lawrence and Noah Moncivias are on administrative assignment until the investigation is complete.