OAKLAND -- Crews contained a stubborn house fire in the Oakland hills Thursday evening and no one was injured.

Chemicals in a basement and fire trapped in the walls of the home kept firefighters busy for about 90 minutes Thursday.

The 6 p.m. fire was under control at 7:33 p.m., a fire official said.

The fire at a home in the 7000 block of Norfolk Road in the Oakland hills sent large plumes of gray smoke into the sky.

The American Red Cross was dispatched to the scene to bring fire crews water and food as cleanup was expected to be lengthy.

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Reach Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.