Two powerful explosions — including a possible car bomb — injured at least 20 potential outside a soccer stadium in central Istanbul in an apparent attack on a group of police,  Turkey's interior minister says.

“It is thought to be a car bomb at a point where our special forces police were located, right after the match at the exit where Bursaspor fans exited, after the fans had left.”

Soylu was quoted as saying by Turkey’s state-run Anadolu Agency. “We have no information on the number of dead. God willing we hope there won’t be any. The wounded are police.”

The private NTV channel reports that the target of the attack was a bus used by riot police. They said gunfire could be heard in what appeared to have been an armed attack on police.

Ambulances and fire trucks were dispatched to the area around Vodafone Arena, CNN Turk reports.