The bassist for the Los Lonely Boys was arrested Saturday on charges of marijuana possession and assault, authorities said.
Joey "JoJo" Sacarais Garza, 26, was in town with fellow sibling-bandmates, who were preparing for a concert.
Police responding to a report of a disturbance at the Omni Hotel in downtown Austin found Garza and a woman in his room, police spokeswoman Laura Albrecht said. The woman was assaulted, Albrecht said.
Garza was charged with assault causing bodily injury and possession of less than 2 ounces of marijuana. He was released from Travis County Jail hours later.
The San Angelo-based Tex-Mex flavored rock 'n' roll group hit the national spotlight in 2004 with their Grammy award-nominated debut album "Los Lonely Boys."