Police in California say the suspect in a mass shooting during Lunar New Year celebrations is now dead. SWAT officers surrounded a white van for hours today, trying to determine whether a man barricaded inside was the person responsible for taking the lives of 10 people. Police say the 72-year-old suspect died at the scene from a self-inflicted gunshot wound. Investigators found several items inside the van connecting him to the crime scene. As Jennifer Johnson reports, police are now trying to figure out what motivated this latest mass shooting in the U.S.