"There were at least three rival gang groups here this morning for whatever reason. As they were here, we had officers on scene. We expected issues," said Sgt. W. Patrick Swanton, a police spokesman.

The fight broke out at Twin Peaks restaurant and spilled into the parking lot. It quickly escalated from hands and feet, as weapons, to gunfire, Swanton said.

He expressed anger at the management of Twin Peaks, which he claims has been less than helpful in dealing with gangs in the past. He declined to identify the specific groups involved in Sunday's shooting.

"Are we frustrated? Sure. Because we feel like there may have been more that could have been done by a business to prevent this," Swanton said.

To escape the fight, some restaurant customers and employees took cover in the freezer, according to CNN affiliate KWTX. The station reported that more than 100 weapons were recovered, and Waco police said officers were continuing to arrest people arriving with weapons.