The call for a new investigation came a day after the Federal Bureau of Investigation said it had evidence Pyongyang was responsible for the attack, prompting President Barack Obama to declare that the United States would respond “proportionately” to the cyberattack.
On Saturday, an unidentified Foreign Ministry spokesman in the capital Pyongyang said North Korea was able to prove it was not responsible for the hacking, and urged the United States must accept its proposal for the joint investigation.
“The U.S. should bear in mind that it will face serious consequences in case it rejects our proposal for [a] joint investigation and presses for what it called countermeasures while finding fault with” North Korea, the spokesman said in a statement carried by Pyongyang’s official Korean Central News Agency.
“We have a way to prove that we have nothing to do with the case without resorting to torture, as what the CIA does,” he said.
US officials blame North Korea for the hacking, citing the tools used in the Sony attack and previous hacks linked to the North, and have vowed a response.
“We will respond. We will respond proportionately and we’ll respond in a place and time and manner that we choose,” Obama told an end-of-year news conference at the White House on Friday.