Forensic policemen and officers attend the scene following a twin suicide bomb attack near to Besiktas Vodaphone Arena on December 10, 2016 in Istanbul, Turkey. According to reports, at least 13 people were killed by a twin suicide bomb attack near to the Besiktas Vodaphone Arena, which is believed to have been targeting riot police. (Photo by Erhan Demirtas/NurPhoto via Getty Images)
20 police officers were wounded in live bomb action in Istanbul, Turkey, on 10 December 2016. 2 bombs exploded against the police working next to Besiktas stadium. A large number of ambulances were sent to the scene. The crime scene was closed by the police. (Photo by Erhan Demirtas/NurPhoto via Getty Images)
20 police officers were wounded in live bomb action in Istanbul, Turkey, on 10 December 2016. 2 bombs exploded against the police working next to Besiktas stadium. A large number of ambulances were sent to the scene. The crime scene was closed by the police. (Photo by Erhan Demirtas/NurPhoto via Getty Images)
20 police officers were wounded in live bomb action in Istanbul, Turkey, on 10 December 2016. 2 bombs exploded against the police working next to Besiktas stadium. A large number of ambulances were sent to the scene. The crime scene was closed by the police. (Photo by Erhan Demirtas/NurPhoto via Getty Images)
Ambulances arrive at the scene after explosions near the Besiktas Vodaphone Arena on December 10, 2016 in Istanbul, Turkey. According to reports, at least 13 people were killed after explosions believed to have been targeting riot police were set off near to the Besiktas Vodaphone Arena. The car bomb exploded in the heart of Istanbul on late December 10, wounding around 20 police officers, Turkey's interior minister said, quoted by the official Anadolu news agency. The bomb, apparently targeting a bus carrying police officers, exploded outside the stadium of Istanbul football club Besiktas following its match against Bursaspor. (Photo by Emrah Oprukcu/NurPhoto via Getty Images)
