Los Angeles County Sheriff's investigators are searching for three male suspects in the firebombing of a Los Angeles-area tire shop that killed three teenagers.

Officer Nicole Nishida says officials will release surveillance video of the suspects Tuesday.

A fourth suspect, 19-year-old Roberto Fuentes of Baldwin Park, was arrested April 26, a day after the fire broke out in South El Monte. He is charged with three capital murder counts.

Prosecutors allege Fuentes threw a Molotov cocktail into the tire shop.

Seventeen-year-olds Rodrigo Gonzalez and Christopher Jimenez and 18-year-old Destiny Aguirre died at the scene.

There's no word on a motive for the attack.