Three members of the Turkish Coast Guard have been killed when their boat capsized after being struck by a bulk vessel carrying diesel fuel, reported Reuters.
The bulk carrier has been identified as the Tolunay, a Cook Island-flagged bunker, which crashed into the Coast Guard on its way to the Black Sea.
PTI reported that the crash, which occurred at 8.40am local time, had closed the Bosphorus Strait for all traffic, but now understands traffic was resumed around 14.30.
Six people were previously rescued by Turkish authorities after the collision in the southern part of the strait, and no deaths had previously been reported.
The Strait of Bosphorus sees 3% of world crude oil trade and is a key passage between the Black Sea and the Mediterranean.