Russian sub accident kills more than 20

An accident aboard a nuclear-powered Russian submarine in the Pacific Ocean killed more than 20 people Sunday, the navy said. The nuclear reactor aboard the submarine was operating normally and radiation levels were normal, navy spokesman Capt. Igor Dygalo said. The accident occurred when a fire-extinguishing system went into operation in error aboard the submarine, which was on a test run in the Pacific, Dygalo said. He said the dead included sailors and shipbuilders. The submarine was heading back to shore on its own power, and 21 people injured in the accident the injured were evacuated to a ship that was escorting the sub.