Former deputy accused of killing three taken into custody

Authorities captured 41 year-old Stephen Broderick early Monday morning at 7:05 a.m., near Manor, just north of Austin, after receiving two 911 calls about a man walking along Highway 290. He was taken into custody.

Broderick is a former sheriff’s deputy accused in an “active attack” in northwest Austin on Sunday. He remained “at large” for a day. Police said they believed the killings were an isolated domestic situation with no risk to the general public.

Three people were killed in Sunday’s attack, which was at an apartment complex. Austin-Travis County EMS said the individuals had suffered gunshot wounds and medics performed CPR, but all three died shortly after police arrived. Police said the victims were two women and one man.

Elgin ISD Superintendent Dr. Jodi Duron said that Alyssa Broderick and Willie Simmons III were killed Sunday and both were active in the district, both academically and athletically. Law enforcement has not confirmed the identity of the victims.

The Travis County Sheriff’s Office confirmed Broderick resigned from TCSO in 2020. A Sheriff’s spokeswoman said that Broderick was a property crimes detective. Broderick had also previously worked for the Bastrop County Sheriff’s Office.

Broderick was charged with Child Sexual Assault in June 2020 and was released 16 days later after posting $50,000 bail. The Travis County District Attorney’s Office announced on April 18 it had filed a motion to revoke that bond.

After posting bail, he was ordered to have no contact or to go within 200 feet of the child and was ordered to wear a tracking device. A Travis County judge ordered the removal of the device on November 5.

According to the Austin American Statesman, Broderick’s lawyer argued that Broderick had worn the monitor for 142 days with no substantial violations and that it should be removed. A state district judge agreed, which the Staesman reported left him unsupervised months after his daughter and wife stated they feared for their safety with him released from jail.

The Travis County District Attorney’s Office has charged Broderick with capital murder in the shooting deaths of his adopted daughter, Alyssa Broderick; ex-wife, Amanda Broderick; and Alyssa’s boyfriend, Willie Simmons III.

When officers apprehended Broderick, they pulled a loaded pistol from his waistband and took out the chambered bullet and ammunition. After his arrest, officers took Broderick to the Travis County Sheriff’s Office Central Booking facility in downtown Austin.