Did Adam Lanza's Mother Try To Have Him Committed?
Description:As detectives continue to comb through evidence and talk to people who witnessed Friday's mass murder at Sandy Hook Elementary School, the state's chief medical examiner is seeking clues in the gunman's biology.
Dr. H. Wayne Carver has asked a geneticist at the University of Connecticut to join in his investigation of the killings. Carver is awaiting toxicology testing results for gunman Adam Lanza, 20, and information that may help answer the question of why Lanza gunned down 20 first-graders.(1:28)