Los Angeles ? Flames allegedly ignited by two teens sent smoke seeping into the Warner Bros. studios and towering high in the sky behind the famous Hollywood sign Friday before losing intensity.

The 150-acre blaze started near a corporate housing complex east of Universal City, south of the Warner Bros. studios complex in Burbank.

Mayor Antonio Villaraigosa said two teens from Illinois were in custody and told authorities they caused the fire.

The 16- and 17-year-old boys, who were visiting Los Angeles with their parents, had been staying at the housing complex, the mayor said. They were being taken to a juvenile detention facility, he said.