15-year-old Richard Ung was arrested at his parents' home in Arcadia, where sheriffs recovered nine guns, including an AK-47 assault rifle and an assault pistol. Ung is being investigated for alleged involvement in the stabbing death of Boo K. Lee.
Ryan Richard Swender, of Arcadia, along with two others, plead not guilty in the December 1 stabbing of a 17-year-old boy at Memorial Park in Sierra Madre.
Two teenage stabbing victims are expected to recover from injuries they sustained when they fought with unknown attackers outside the southeast side of the Westfield Shoppingtown Santa Anita mall.