The unidentified gunman opened fire at about 2.15am, local time before fleeing, Austin police chief of staff Brian Manley told reporters. The motive for the attack, which occurred just minutes after bars closed, was not immediately clear.
“It was a very chaotic scene,” Manley said.
He described people emerging from clubs and bars running in all directions at the sound of gunfire, as police officers on patrol rushed to the scene.
The gunman killed a woman in her 20s and wounded three other women, who were transported to a hospital with injuries that are serious but not life-threatening, said Austin-Travis County Emergency Medical Services spokesman Mike Benavides.
Manley said police were seeking help from the public, including any video recordings, in an effort to find the gunman who is believed to be in his 20s.
Minutes after that shooting, a man opened fire several blocks away in a confrontation at a parking garage, Manley said. Bystanders tackled that gunman, he said.
Police initially believed the two shootings were related and that they were dealing with an “active shooter”, but that was not the case, Manley said.
“From everything we can tell at this point through the initial investigation, these are two unrelated incidents,” Manley told reporters.
The suspect who opened fire in the parking garage was transported to a hospital for injuries he suffered when bystanders subdued him, Manley said. There were no reports of anyone being struck by bullets in that incident.
Meanwhile, three people were killed and a boy aged 12 injured in an early morning shooting at a residence in south Florida. Four people with apparent gunshot wounds were found by officers, said the Miami-Dade Police Department.
Two women, aged 39 and 19, died at the scene and a 17-year-old male died later. The 12-year-old boy who was also shot is in a stable condition at another hospital. Police gave no details about who that gunman might be. The Miami Herald reported the people killed were a mother and her two teenagers.