LOS ANGELES: A nine-year-old boy was among the four victims killed during a mass shooting in California's Orange County, authorities said. The boy was one of the two victims found by police officers in the courtyard area of a business complex in the city of Orange where the mass shooting took place on Wednesday evening, Xinhua news agency quoted the Orange Police Department as saying on Thursday. The Department said in a release posted on its Facebook page that an adult female who had also been shot was found with the boy. (IANS)