Turkish authorities detained four people as part of an investigation into a possible threat to the German and British embassies, state-run media reported on Friday.
The detentions come after the British embassy in the capital Ankara was closed on Friday because of security concerns, the UK Foreign Office said, and after the German embassy said its missions in Turkey were providing “limited services until Friday”.
The British embassy, closed for consular services this week, had been due to reopen on Friday after the Islamic holiday began on Monday.
Richard Moore, British ambassador to Turkey, said on Twitter that it was a “precaution” to close the embassy, adding that British officials were “working closely and cooperatively with Turkish authorities”.
The German embassy in Ankara said as well as offering limited services this week, its missions would “remain closed for any meetings” without giving further details.
Mass-circulation German daily Bild had said that German missions and German schools in Turkey were closed due to fears of an attack.
In the last 12 months, Turkey has been hit by a series of attacks blamed on ISIL terrorists and Kurdish militants. Foreign missions have closed down on occasion due to security alerts.