Europe

UK police investigating acid attack at London club; 12 hurt

General view of the Mangle nightclub in Dalston, east London on Monday April 17, 2017. London police are investigating an acid attack at a London club that led to a mass evacuation with 12 people injured. Police said Monday April 17, 2017 that 12 people were treated at hospitals for burns. None of the injuries were said to be life-threatening.   (Jack Hard/PA via AP)

General view of the Mangle nightclub in Dalston, east London on Monday April 17, 2017. London police are investigating an acid attack at a London club that led to a mass evacuation with 12 people injured. Police said Monday April 17, 2017 that 12 people were treated at hospitals for burns. None of the injuries were said to be life-threatening. (Jack Hard/PA via AP)  (The Associated Press)

British police are investigating an acid attack at a London club that led to a mass evacuation.

Police said Monday 12 people were treated in hospitals for burns. None of the injuries was said to be life-threatening. Two men in their 20s were in serious but stable condition.

Police say the problem at the Mangle nightclub in east London started with a dispute between two groups of people that escalated when a male suspect sprayed a "noxious substance" directly at two men.

Roads in the area were closed and a hazardous material response team rushed to the scene.

The substance has not yet been identified.