Germany has closed its embassy in Ankara and its general consulate in Istanbul because of the threat of a possible imminent attack, the foreign ministry has said.
The ministry said the German school in Istanbul had also been shut due to an "unconfirmed warning".
On Tuesday, Germany had issued an alert to its citizens in Ankara warning of an "imminent attack".
It comes as a car bomb attack killed 37 people and injured at least 125 more in the capital on Sunday.
The Kurdish militant group TAK claimed responsible for the deadly suicide attack in which two of its own were killed.
