Berlin Helicopter Crash- Several People  Said To Have Been Injured Or Killed

Emergency services are attending to a helicopter crash near Berlin's Olympic Stadium, in which several people are said to have been injured or killed. 

According to an unconfirmed report, two helicopters crashed in mid-air during a police exercise, killing one of the pilots and leaving three people hurt. 

Footage showed one black helicopter on its side in the snow. 

Some 400 federal police officers were conducting a football violence training exercise when the crash happened. 

GBC