Two explosions in Besiktas Istanbul
Two explosions targeting riot police occurred in Istanbul's Besiktas district outside the Besiktas football team's stadium tonight.
The explosions were heard only seconds apart, shaking the whole area according to witnesses.
Turkey's Interior Minister Suleyman Soylu has confirmed that at least 20 people, mainly riot police, have been injured in the explosion.
Reports strongly suggest the attacks were carried out with two bomb-laden vehicles.
Turkey's Radio and Television Supreme Council has issued a broadcast ban on the incident following a request from the Prime Minister's office.
Update: 20:57 (GMT)
According to sources 8 riot police have died in the attack.
Update: 21:12 (GMT)
Al Jazeera has reported that 15 police officers have died and 16 injured in the twin-bomb attack.
Update: 21:34 (GMT)
According to Turkish sources one of the explosions was a car bomb while the other was a suicide bomb attack.
38 people have been confirmed injured by Turkish officials and media. Turkey Interior Minister Suleyman Soylu conceded that there were casualties but did not confirm the number of killed.
Al Jazeera and other sources have reported at least 15 riot police were killed in the twin-explosion.
Update: 23:05 (GMT)
Turkish President Erdogan has confirmed that there are casualties in the twin-bomb attack, carried out within a minute apart in two spots near Besiktas Vodafone Arena in Istanbul's Besiktas district.
A video shared on Twitter shows the second explosion followed by consistent gunfire, strengthening reports of clashes.
Turkish media outlets have confirmed that at least 70 people, mainly riot police have been injured.
According to international agencies between 13 and 15 people have been confirmed killed, with the toll expected to rise.
Pro-government media have framed the attacks as targeting the new executive presidential system bill brought to Parliament today.