SAN DIEGO — Eleven pipe bombs believed to have been made by the same person and randomly placed around San Diego County were found over a 12-hour period, authorities said Sunday.
Authorities say the devices could have seriously injured someone had they been detonated.
"We definitely have a bomb series at work," said San Diego County Sheriff's Sgt. Conrad Grayson. "It appears the bombs have been made by the same person, someone who knows what he is doing."