A car bomb that exploded outside Besiktas' stadium two hours after their match against Bursaspor on Saturday has killed 29 people were killed and another 166 wounded, Turkey's interior minister Suleyman Soylu has confirmed.
Images and TV footage showed what appeared to be the burnt-out shell of a car near the Vodafone Arena, with Soylu indicating that it had targeted a riot police bus. Most of the casualties are believed to be police.
Deputy prime minister Numan Kurtulmus confirmed one of the attacks had been the explosion of a car bomb while the second was the act of a suicide bomber.
At a media conference on Sunday, Soylu announced that 27 police officers and two civilians had been killed in the explosions.
The Turkish Football Federation condemned the attacks, while Bursaspor confirmed their supporters had exited the stadium close to the scene of the attack before the explosion.
A Turkish Football Federation statement reads: "We learned with tremendous sorrow that a large number of policemen and our citizens were injured in the treacherous attack near the Vodafone Arena, Istanbul.
"We strongly condemn the barbarous terrorist attack and wish our citizens quick recovery."
The explosion took place around the area from which Bursaspor fans exited the stadium but the club has released a statement to confirm that none of their supporters remained in the vicinity.
"There was an explosion near the exit of the visitors' stands," the statement says. "We learned that about five minutes after the incident, our supporters had left that area."
The bomb was heard during a broadcast of a post-match show on Besiktas TV, with presenters subsequently fleeing off camera.
Besiktas, meanwhile, posted on Twitter to declare: "Terrorism will never destroy the spirit, courage and resilience of our people. #Besiktas JK."