Several quakes have hit Turkey's largest city, with residents telling the BBC of panic as people ran from shaking buildings.

The BBC reports Turkey officials as saying there were three quakes. The first struck the coast of the Silivri district of Istanbul at 12:13 local time (10:13am UK time). That was reportedly 3.9 magnitude. The second was of 6.2 magnitude in the same area. That broke out at 12.49 local time - 10.49am UK time.

There were no immediate reports of damage or injuries following the quake, which had a preliminary magnitude of 6.2.