U.S. to make formal announcement on Sony attack: U.S. official

WASHINGTON (Reuters) - U.S. officials on Friday were expected to make a formal statement on the devastating cyberattack against Sony Pictures on Friday morning, a U.S. official said.

Washington has called the strike against the big Hollywood studio a matter of national security but has not formally put the blame on North Korea, despite a U.S. official's indication this week the Obama administration could soon tie it to Pyongyang.

Obama was expected to address the issue at a 1:30 p.m. news conference.

The cyberattack against the big Hollywood studio led it to pull its movie depicting North Korea's leader amid threats and is the biggest hacking of a company on U.S. soil.

(Reporting by Washington Newsroom)