The youngest son of Irvine Ranch heiress Joan Irvine Smith was arrested on suspicion of possessing less than a gram of cocaine, authorities said Monday.
Morton Irvine Smith, 31, of Huntington Beach was taken into custody about 3:30 a.m. Saturday near 28th Street and Balboa Boulevard after officers found about half a gram of cocaine on his person, Sgt. John Desmond said.
