Austin Police Chief Art Acevedo offered condolences Sunday morning to the families and friends of the woman killed and four others injured in an overnight shooting on Sixth Street.

“On behalf of the Austin Police Department, we wish to extend our deepest condolences to the family and friends of the young woman who lost her life to this senseless act of violence and wishes for a speedy recovery to the individuals wounded,” Acevedo said in a statement.

Police are still searching for the shooter, who opened fire into a crowd on Sixth and Brazos streets just after 2 a.m. Sunday.

One woman killed, four others injured in 2:17 a.m. incident.

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“The men and women of the Austin Police Department will work (tirelessly) to identify and apprehend the person responsible,” Acevedo said.

Police could not say Sunday morning if the shooter and victims knew one another. The investigation is ongoing.

Downtown Austin shootings, 07.31.16 photo

Ricardo B. Brazziell

Early Sunday, the area around Sixth and Brazos streets was still shut down as police processed the scene.

Just blocks away and moments after the first shooting incident, police responded to an aggravated assault with shots fired at a parking garage on Trinity Street. One person was injured and detained.

The back-to-back incidents led police to issue an “active shooter” warning early Sunday morning. They later clarified that the two incidents were unrelated.

In his statement, Acevedo called Austin one of the “safest cities” in the nation.

“The community we serve partners with APD to stand up for our neighbors and friends and to bring those that would do us harm to justice,” he said.

Anyone with information about the Sixth Street shooting is asked to call the homicide tipline at 512-477-3588. Those with video of the incident or its aftermath can email police3@austintexas.gov.

5:45 a.m. update: Austin police are looking for the person who opened fire on a crowd on Sixth Street in a shooting that killed one woman and injured four other people early Sunday.

“It was a very chaotic scene,” Austin police Chief of Staff Brian Manley said at a news conference shortly before 5 a.m. “A lot of people running in different directions with all the gunshots coming out.”

The shooting was reported at 2:17 a.m. in the 200 block of East Sixth Street — two blocks east of Congress Avenue in the heart of the entertainment district just as patrons were leaving bars at closing time.

Manley said that a woman in her 30s was killed and that the incident involved a person shooting into a crowd.

The four others injured, all women, are expected to survive, according to Austin-Travis County EMS. Three were taken to University Medical Center Brackenridge. The fourth refused treatment, EMS Cmdr. Mike Benavides said.ond incident was reported as an assault in the 800 block of Trinity, Manley said.The deadly incident on Sixth Street in which a woman in her 30s was killed involved a person shooting into a crowd, Manley said. One woman died, three women were taken to University Medical Center Brackenridge with injuries describe as not life-threatening. A fifth victim refused treatment, EMS Cmdr. Mike Benavides said.

Shortly after the shooting, a second incident involving a gun was reported in the 800 block of Trinity Street, about three blocks away, Manley said.

No injuries were reported in that incident, which happened at 2:24 a.m. in a parking garage on Trinity Street. After a reported assault in which gunshots were fired, Manley said, bystanders helped detain a person.

“Given that we just had just had multiple shots fired on Sixth Street and then we have another incident blocks away with shots fired in that incident,” Manley said, “the initial concern was that we have an individual engaged in active shooter tactics in an entertainment district, but, again, that is not what our assessment is at this point. We have two separate incidents.”

4:20 a.m. update: Sam Vedamanikam, 26, and several friends were headed back to their car when they heard four or five gunshots that sent them and hundreds others diving to the ground.

It happened in the Sixth Street entertainment district, east of Congress Avenue, where one woman in her 30s died after being shot, Austin-Travis County EMS said. Emergency workers initially called the incident an “active shooter” situation. Police now say it was two separate shootings in the same area.

There have been no further shootings reported in the area. However, police were urging people to continue to avoid downtown Austin.

Vedamanikam was leaving the dance club Barbarella and headed west on Sixth Street when one of the shootings occurred. He was near Sixth Street and San Jacinto when he heard gunshots.

“There were just tons of people on Sixth Street and I see all of them jump toward the ground,” he said. “A lot of people were screaming.”

4 a.m. update: Authorities say there were five victims in the shooting: a woman who died at the scene, two women and a man who were taken to the hospital for treatment of gunshot wounds, and a man who refused treatment. A witness said the shootings happened along Sixth Street, east of Brazos Street.

3:25 a.m. update: Austin police says the “active shooter” incident that left one woman dead in downtown Austin was two separate incidents.

Both scenes are secure, police said at 3:18 a.m.

Earlier: Austin-Travis County EMS has confirmed that one woman in her 30s is dead in an incident they described as an “active shooter” situation on Sixth Street in downtown Austin.

Multiple people have been injured in the shooting, according to EMS. Three people were taken to University Medical Center Brackenridge, authorities said.

The Austin Police Department confirmed the active shooter situation and is warning people to avoid the area. Officials report multiple victims. Additional details to come.