North Korea Seeks Joint Investigation Into #SonyHack With U.S., Warns of grave consequences if refused

North Korea’s government said it had nothing to do with the hacking of Sony Corp.’s computer systems and called on the U.S. to hold a joint investigation into the incident.

North Korea can prove its innocence and warned of “grave consequences” if the U.S. fails to take up its offer, the country’s foreign ministry said in an e-mailed statement today cited by the state-run Korea Central News Agency. “As the U.S. is spreading groundless allegations and slandering us, we propose a joint investigation,” the ministry said.