HOUSTON — The lead singer of the Grammy-winning Tejano group La Mafia has suffered head wounds in an unprovoked attack outside a Houston club.

Oscar De La Rosa and his driver were knocked unconscious by a man they didn’t recognize in the attack early Monday, band co-founder Armando Lichtenberger Jr. says.  De La Rosa is resting at his Houston home Tuesday, Lichtenberger says.

No arrests have been made. Houston police are looking for a man who became violent after being thrown out of the bar.

De La Rosa has facial cuts, eye damage and he lost two teeth, Lichtenberger says.

He says La Mafia is considering whether to cancel any performances.

The band, which formed in 1980 in Houston, won a Grammy in 2006 for the album, “Nuevamente.”

Senior Editor, News, Arizona Daily Star, Tucson, Az.