The Turkish Defense Ministry on Saturday said a civilian commercial vessel detected a "mine-like object" in the coastal zone of Bosphorus Strait, which had been neutralized.
The Bosphorus was briefly closed due to the suspected mine before being reopened, Anadolu news agency reported.
The object was found at the northern entrance of the Bosphorus Strait, off the coast of Sariyer district in northern Istanbul, according to the Milliyet daily, a Turkish newspaper published in Istanbul.
The object was like a ball with horn-like protrusions, the newspaper quoted a statement of the Directorate General of Coastal Safety as saying.
(With input from Xinhua)