Texas police said three officers were shot and injured in a shooting in Cedar Park, 20 miles outside of downtown Austin.
The suspect is barricaded in a house and the situation remains active.
Cedar Park police chief Mike Harmon said shortly before 9 p.m. local time on Sunday evening that all three officers were in stable condition and well.
He said the officers received a call from a mother at 3:10 p.m. Her son, in his mid-twenties and suffering from mental health problems, kicked the door and was "very aggressive".
"Our officers arrived and were shot," he said. The officer returned fire and it is not known whether the suspect was hit by our officers.
Police in Cedar Park, a town outside of Austin, Texas, respond to a shootout
"But three of our officers received gunshot wounds from the suspect."
He said the suspect then barricaded himself with three other family members – his mother, a teenager and a third person.
He said they had negotiators out and they last spoke to him 10 minutes ago.
"It is our goal to bring this to a peaceful solution."
He said they had "a story" in the residence.
Harmon added, "I've spoken to his family members and I stressed that we wanted to give him the help he needed."
At around 5:20 pm on Sunday afternoon, the police tweeted, “At this point we can confirm that three Cedar Park police officers were shot dead.
& # 39; You are in stable condition at a local hospital.
"This remains a very active scene, the subject is currently not in custody."
The incident was first reported shortly after 4 p.m. local time in Texas
Cedar Park police tweeted an update Sunday afternoon, saying several officers shot
Officials are asking residents to avoid the Baghdad Road area south of Leander High School due to the ongoing situation.
Harmon previously said he visited the three officers at the hospital and thanked the local community for their support.
He said the trio was in a stable condition.
A law enforcement agency at the site of the shooting notified FOX 7 Austin that an officer was shot in the arm.
Another officer was shot in the chest but was protected by his vest.
A third officer sustained a grazing head wound.
Mike Harmon, the police chief, thanked residents of the Texan city for their support
Police said it was "a very active scene" near Leander High School in Cedar Park
"We are at the scene of a shootout in which several Cedar Park police officers were shot while responding to a call at a house outside Natalie Cove," the police tweeted earlier.
"The subject is barricaded in the house and several law enforcement agencies are on the spot."
A Fox News reporter said at least three ambulances were on site, in addition to several SWAT units.
Around 80,000 people live in Cedar Park.
Caleb Record told Fox News that he first thought emergency services would respond to a COVID case or heart attack, given the intensity here.
& # 39; About three, four, five patrol cars come by; SWAT comes over; All just zoom past.
"So I'll turn around and try to see what's going on."
Witnesses told KVUE they heard multiple gunshots and there was a large presence from law enforcement agencies.
Residents are asked to stay in their homes.
"This is a fluid situation and we will keep you all informed as new information comes in," police tweeted.
Residents are asked to seek refuge until the situation is under control
Greg Abbott, the governor of Texas, vowed to bring the shooter to justice.
"Our hearts go out to the police officers who were injured protecting the Cedar Park community this afternoon," he said.
“We must never take the service and sacrifice of our law enforcement officers for granted, and the state of Texas stands ready to provide the support and resources necessary to bring justice to those involved.
"I ask all Texans to join Cecilia and me in praying for these officials and for the safety of all law enforcement officers across the state."