Donald Trump launched his latest attack on the media just as the offices of CNN, frequently the target of his anger, were being evacuated following a bomb threat.

Police searched the broadcaster’s New York newsroom after a caller claimed five explosives had been placed inside the building. Officers later gave the all-clear.

Moments after the threat, which CNN said came just before 10pm, the president wrote on Twitter: “FAKE NEWS - THE ENEMY OF THE PEOPLE!”

There is no suggestion he had seen reports of the evacuation when he posted the tweet, which followed posts in which accused the FBI of pursuing a "witch hunt" against him.

But the apparent coincidence is likely to reignite concerns about Mr Trump’s anti-media rhetoric.

Earlier this year, CNN and several high-profile critics, including Hillary Clinton and Barack Obama, were targeted with mail bombs allegedly sent by a Trump supporter.

New York Police Department said the latest threat against the broadcaster on Thursday night proved to be hoax.

Police said they received an emergency call about the threat at 10.07pm local time (3.07am GMT), a minute before Mr Trump’s tweet.

Staff evacuated the Time Warner Centre and Don Lemon's CNN Tonight was taken off the air as officers searched the building with a bomb squad on standby.

The network broadcast pre-recorded programming for about 30 minutes before Mr Lemon’s show resumed live from the street outside.