The Counterterrorism Bureau on Friday warned Israelis to leave Turkey immediately due to a threat of an imminent terror attack.

In an unusually pressing message, the bureau urged Israelis currently in Turkey to stay away from crowded tourist attractions, heed warnings issued by local authorities and media and leave the country as soon as possible.

"Immediate risks for terrorist attacks in the country are emerging," said the message released by the Prime Minister's Office on behalf of the bureau. "The threat applies to all tourist sites in Turkey."

Israelis with family members in Turkey were asked to inform them of the updated travel warning. Citizens planning to travel to Turkey were urged not to make the trip.

According to the message, the Counterterrorism Bureau decided following a situation assessment to reiterate to the public that the terror warning in Turkey is high.

"We seek to remind that the travel warning is at level 2 [denoting] a high concrete threat," the message said.