Calif. woman killed by 'homemade cannon' By R. Stickney, NBCSanDiego.com Homicide investigators with the San Diego County Sheriff's Department are on the scene of a bizarre death in San Diego's East County. Deputies say a man called 911 to report his wife may have been killed with a homemade cannon by accident. Investigators along with U.S. Border Patrol agents responded to Potrero Valley Road around 12:30 a.m. Tuesday. Two men were working on the cannon outside the home in the Twin Lakes Resort mobile home park when it fired, sending a projectile into the home. It's not clear if the cannon was homemade or not according to Cal Fire spokesperson Mike Mohler. When officials arrived, they found a 33-year-old woman dead from injuries she suffered after the projectile damaged the home, Mohler said. One of the two men working on the cannon was taken to Sharp Memorial Hospital. His injuries were unknown as of 8 a.m. Deputies were heavily armed with assault rifles in an area where trailers and mobile homes were accessible only by a dirt road. An ambulance was also called to the scene just north of the U.S.- Mexico border near Tecate.