<p>SANTA CLARITA, Calif. - A boy playing with matches started a fire in north Los Angeles County that consumed more than 38,000 acres and destroyed 21 homes last week, authorities said Tuesday.</p>
<p>The boy, whose name and age were not released, was interviewed a day after the Buckweed Fire was sparked Oct. 21, said sheriff's Sgt. Diane Hecht.</p>