Turkish Airlines flight #TK203 made a U-turn north of Iceland yesterday, first heading to Istanbul and then diverting to Cologne.

The reason for this maneuver is still unknown.

If it had been a mechanical issue, it would have been redirected to a closer location like Norway.

There's some turbulence in the skies. It might be due to bad weather conditions. There have been numerous strange reports in the last 24 hours.