Teen arrested, charged with murder for New Year's Day party shooting in North Austin

Round Rock New Year's Eve shooting investigation

The suspect in a shooting at a New Year's Eve party in Round Rock allegedly had a bloody gun in his trunk, but was released from the scene, court documents say.

AUSTIN, Texas - A 19-year-old has been arrested and charged with murder in connection with a shooting in North Austin on New Year's Day.

The shooting was Austin's first homicide of 2026.

PREVIOUS COVERAGE: 1st homicide of 2026: Austin police investigating

What we know:

Alton Williams III was apprehended by US Marshals in Pflugerville on Jan. 7.

He's been charged with first-degree murder and is being held in the Travis County Jail on a $200,000 bond and a misdemeanor from another county.

Alton Williams III (Austin Police Department)

The backstory:

Just before 1:30 a.m. on Jan. 1, Austin police officers responded to a business park in the 7800 block of N. Lamar Boulevard, across from T.A. Brown Elementary School, for a shooting.

The caller reported someone had been shot in the chest.

When officers responded, they found a man, later identified as 18-year-old Isaiah Atkinson, with trauma to his chest. He was pronounced dead on scene.

The investigation showed he had been at a party at the Austin Event Center in the business park. During the party, a disturbance happened, which resulted in Atkinson getting shot inside the venue.

APD seeks shooter in 1st homicide of 2026

Officials now believe Atkinson was shot while inside the venue where he was attending a party for New Year's Eve.

What you can do:

Anyone with information is asked to contact the Austin Police Department at 512-974-TIPS. 

Tips can be submitted anonymously through the Capital Area Crime Stoppers Program by clicking here or calling 512-472-8477. 

A reward of up to $1,000 may be available for any information that leads to an arrest.