Round Rock police have arrested a 17-year-old suspect in the mass shooting at a Juneteenth celebration that left two women dead and 14 others injured.

Ricky Thompson III, 17, of Manor, was taken into custody by the Lone Star Fugitive Task Force at around 7:30 a.m. Thursday, Round Rock Police Chief Allen Banks said at a press conference. Thompson has been charged with aggravated assault with a deadly weapon, a second-degree felony.

“We know Ricky Thompson was not the only shooter at this event,” Banks said. “We are still looking for other suspects.”

The shooting happened Saturday evening at Old Settlers Park during a Juneteenth celebration attended by hundreds of people. Police said the gunfire erupted as a result of an altercation between two groups at the event.

Killed in the shooting were Lyndsey Vicknair, 33, and Angelia Duke, 52, both mothers from the Round Rock area. Fourteen other people suffered gunshot wounds and were taken to area hospitals.

RELATED | Husband of victim in Round Rock mass shooting recalls how he lost his wife

Banks said the investigation is ongoing and charges against Thompson could be upgraded.

“We have a lot of evidence, a lot of case work to continue to do to make sure that we are getting the justice for these families that they deserve,” Banks said. “We are going to continue to work hard to make sure that we get a resolve, this case, for the families, the victims and this community.”

Police are still asking anyone with information, photos or video related to the shooting to contact them.