Suspect said he shot teen during June 17 event in Round Rock, police say

Ricky Thompson III, 17, of Manor, was charged with aggravated assault with a deadly weapon. It is a second-degree felony punishable by up to 20 years in prison. Two people were killed and 14 others injured during an altercation between two groups of people during the Juneteenth celebration at Old Settlers Park. Police declined to say what the argument was about.

Part of the argument was between Thompson and a 17-year-old man, according to the affidavit. He said Thompson pulled his gun from his waistband during the altercation and shot the victim, hitting him once in the leg.

The affidavit did not provide details of the argument.

An officer providing security at the event discovered the victim had gone to St. David's Hospital to be treated for a gunshot wound, according to the affidavit.