Austin, Texas – A former detective has been arrested fatally shooting three people in Austin on Sunday.

The deadly shooting occurred at around 11:42 AM at an apartment complex in the Great Hills Trail area of northwest Austin.

The victims' identities remain anonymous. Authorities have confirmed that all were adults. Two were Hispanic women and one was a Black man.

According to The Washington Post, the suspect is a former Travis County police detective named Stephen Nicholas Broderick (41).

It's not Broderick's first run-in with the law: in June, he was arrested after being charged with sexually assaulting a child. He resigned from his post as a property crimes investigator after being put on administrative leave.

Seven years prior, he fatally shot a 78-year-old man while on duty. The man had allegedly refused orders to drop a gun he was waving at police.

Law enforcement officers believe Broderick already knew his victims.

Around 7 AM on Monday, police arrested Stephen Broderick (41) in Manor, Texas after two people spotted the man and reported their sightings to local authorities.

Manor Police Chief Ryan Phipp told CNN, "He complied fully with the officers and was taken into custody and they did locate a pistol on his waistband".

APD also named the victims as the suspect's ex-wife Amanda Broderick, his daughter Alyssa Marie Broderick, and Willie Simmons III. The statement said Stephen Broderick was meeting his ex-wife for monthly visitation hours with their son before the shooting began.

Homicide investigators and crime scene technicians found the incident started after a car crash occurred. According to interviews with witnesses from the scene, Stephen Broderick began firing shots shortly after the collision, killing the three suspects before fleeing the scene.

The child was later found unharmed away from the scene and was taken into police custody.

"This is a tragic incident that has deeply impacted our community, and I’m glad to report that the suspect has been taken into custody without incident, and with no additional loss of life," Interim Chief Chacon said.

The investigation is still underway as law enforcement officials look for a motive.