EIGHT people have been rushed to hospital after a "chemical substance" was set off in a nightclub - leaving people "struggling to breathe".
Cops were called at 5am this morning to reports of an attack at the Pop Works nightclub in Doncaster, South Yorkshire.
Around sixty people were evacuated from the club, with eight taken to hospital.
A woman told the Mirror: "The security were shouting for everybody to get get out.
"I have never seen something like this, everyone was just coughing and sneezing and struggling to breathe.
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"There must have been about 50 or 60 people in. It was really creepy to be honest."
South Yorkshire Police said: "We are carrying out an investigation into reports a chemical substance was let off inside a night-time venue in Doncaster city centre in the early hours of this morning.
"We were called at 5am to reports a number of people said to be feeling unwell at Pop Works on Silver Street.
"Eight people at the venue required hospital treatment but nobody is thought to have had any lasting effects.
"We are now working to determine what substance was let off at the location.
"We are appealing for anyone with information to come forward.”
Chief Inspector David Struggles said: “For those inside Pop Works this must have been a terrifying ordeal and we are working hard to determine exactly what happened at the location.
"This type of offence will cause concern among the community and those who like to use the night-time economy in the city.
"We want to get to the bottom of what happened as quickly as possible to ease those fears and make those who live in or wish to use the city centre for leisure feel safe and secure.
"If you were inside Pop Works at the time or in the nearby area and saw or heard anything suspicious we want to hear from you.
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"You could have seen something important, no matter how small it seems. It could prove vital for the investigation."
