Turkish special force Police officers secure area around the site of a bomb attack that targeted a police bus in the Vezneciler district of Istanbul on June 7, 2016. A bomb ripped through a Turkish police vehicle near Istanbul's historic centre, killing seven officers and four civilians and adding to security concerns after a string of attacks in Turkey's biggest city.The bomb targeted a service shuttle bus carrying officers from Istanbul's anti-riot police as it was passing through the central Beyazit district close to many of the city's top tourist sites, Istanbul governor Vasip Sahin said in a live statement on Turkish television. / AFP / OZAN KOSE (Photo credit should read OZAN KOSE/AFP/Getty Images)
