Turkey's interior minister Suleyman Soylu has confirmed that 29 people were killed and another 166 wounded in two terror attacks close to Besiktas's Vodafone Arena on Sunday (AEDT).
The bombings took place around 90 minutes after Besiktas had defeated Bursaspor 2-1 in a Super Lig fixture at the stadium.
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 (TFF) condemned the attacks, while Bursaspor confirmed its supporters had exited the stadium close to the scene of the attack before the explosion.
"An explosion took place near the gate where our fans left the Vodafone Arena after the match," a club statement read.
"We have come to understand that our supporters left that area about five minutes before the incident.
"We wish a speedy recovery for all of the injured security forces and citizens."
Besiktas, meanwhile, posted on Twitter to declare: "Terrorism will never destroy the spirit, courage and resilience of our people. #Besiktas JK."
In a statement released on its website, the TFF expressed its support for the victims of the attack, which is believed to have been caused by a car bomb.
"We learned with tremendous sorrow that a large number of policemen and our citizens were injured in the treacherous attack near Vodafone Arena, Istanbul," the statement read.
"We strongly condemn the barbarous terrorist attack and wish our citizens a quick recovery."