A senior politician has hit back at Sony's decision to pull its comedy The Interview after hackers threatened those who went to see it.
Newt Gingrich, a former Republican House of Representatives speaker, warned that it set a dangerous precedent, adding: "America has lost its first cyber war."
No one should kid themselves. With the Sony collapse America has lost its first cyberwar. This is a very very dangerous precedent.
Meanwhile, fans showed their support for the cancelled movie, about an assassination attempt on North Korean leader Kim Jong Un.
Texas cinema chain Alamo Drafthouse said at least one of its theatres would be screeningTeam America: World Police, in which a US secret agent squad foil a terrorist plot by late North Korean leader Kim Jong Il, in a show of solidarity.
The US government is considering a range of options "in weighing a potential response" to the recent cyber attack on Sony's film division, the White House National Security Council has said.
A statement from the council said the FBI is now leading the investigation into the attacks, and is working to bring those behind it to justice.
The FBI has released a warning to other businesses and theatres associated with as-yet unreleased comedy film The Interview could be targeted in cyber attacks.
A private document reportedly states that "anyone associated with the production, distribution and promotion" of the film "could possibly become the target of cyber attacks."
A spokeswoman for Sony has said the company has "no further release plans" for comedy The Interview, either in movie theatres or onto video.
It comes after hackers, reportedly from North Korea, threatened movie-goers who went to see the film, sparking major theatre chains to pull out of showings.
A cyber attack on Sony's film division was a "state-sponsored" attack by North Korea, Reuters news agency has reported, citing US government sources.
Officials say the White House was debating whether to publicly announce the findings by federal investigators.
It comes after the company announced it was cancelling the theatrical release of comedy The Interview, which stars James Franco and Seth Rogen, after hackers threatened a "bitter fate" for anyone who went to see the film.
A string of major US movie theatre chains pulled out of showing the film in the wake of the threats.
Federal investigators in the US have found that North Korea is behind the recent cyber attack on Sony Entertainment Pictures, according to reports.
Their findings are due to be announced in full tomorrow.
Sony Pictures has said it is "deeply saddened" that threats from hackers have forced them to cancel the release of 'The Interview', a comedy film about a plot to assassinate North Korean leader Kim Jong-Un.
"In light of the decision by the majority of our exhibitors not to show the film 'The Interview', we have decided not to move forward with the planned December 25 theatrical release," the company said in a statement.
The studio said it was "deeply saddened at this brazen effort to suppress the distribution of a movie, and in the process do damage to our company."
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Sony has announced it is cancelling the release of controversial film The Interview after a number of cinemas said they would not show it.
The company said it was "extremely disappointed at this outcome".
The comedy, which stars Seth Rogen and James Franco, depicts a plot to assassinate the North Korean leader and has drawn fierce criticism from the country's government.
The cinemas opted not to show the film after threats from hackers who said they would target US cinemas.
Two of the US' major movie theatre chains have announced that they will be delaying screenings of upcoming film The Interview.
Regal Cinemas, which operates 573 US theatres, and Canadian company Cineplex Entertainment, which operates 161 theatres, both said the film would not be immediately available to watch in their venues.
The decision not to show the film on its American release date on December 25 comes in the wake of recent online threats against people who watch it.