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North Korea called Saturday for a joint investigation with the US into a crippling cyber attack on Sony Pictures, denouncing Washington's "slandering" after President Barack Obama warned Pyongyang of retaliation and the US sought help from China on the issue. The US blames North Korea for the hacking which prompted the cancellation of the Christmas Day release of "The Interview", a madcap romp about a CIA plot to kill leader Kim Jong-Un which infuriated the rogue state. Mark Stroh, a National Security Council spokesman, Saturday reiterated the White House's confidence that North Korea was behind the attack on Sony, adding, "if the North Korean government wants to help, they can admit their culpability and compensate Sony for the damages this attack caused".
SANTA CLARA, Calif. (AP) — Frank Gore broke four tackles on a 52-yard touchdown run six days after a concussion, and the San Francisco 49ers led San Diego 7-0 after the first quarter Saturday night with the Chargers still holding slim playoff hopes.