A mine-like object was spotted near the Bosphorus, Milliyet reports.
It is assumed that it may be a floating mine, which was brought by sea currents from the port in Ukraine, the newspaper notes.
The object was spotted by fishermen in the Sarayer Garipce area of Istanbul.
Sappers of the Turkish Coast Guard inspect the device.
In a statement today, the Turkish Ministry of Defense said that the object was spotted by a civilian merchant vessel, and teams of the Submarine Defense Forces were immediately sent to the scene. Teams are working to clear the mine, the ministry said.