Seven people required medical attention after a chemical spill at a Sheffield supermarket.
Emergency services attended the scene of the chemical spill at Asda supermarket car park on Chaucer Road in Parson Cross.
The chemical spill which was confirmed to be Sodium Selenite can be potentially harmful in large doses.
Police are appealling for any information about a white flatbed truck which they believe was in the car park a short time before officers were called.
Officers believe that the truck was carrying barrels that may contain the same chemical that was found in the car park and would like to hear from the driver or anyone who may have seen the vehicle.
Emergency services cordoned off the area and set up road blocks which stayed in place until around 4pm.
Firefighters used absorbent granules to safely dispose of the chemical.
Brian Holmes aged 74, of Oaken Wood, Thorpe Hesley was shopping with his wife when the incident happened.
He said: “We heard there had been a leak and we couldn’t get to the car.
“We went into the cafe for a coffee and then they locked us in the shop for about an hour then they chucked us out.”
Eyewitnesses said the Asda store announced on the tannoy for people to stay away from their cars while fire crews investigate the spillage.
Clare Louise Pearce, of Cowper Crescent, Fox Hill was on her way to do her shopping when the incident happened.
She said: “I came to Asda and the firemen were said it looked like a chemical spill.
“It looked like it came from van in the car park.
“The firemen were asking people not to take their cars out for at least half an hour.”
Gary Greaves, 56, of Wordsworth Avenue, Parson Cross said: “I got a phone call from my wife to say there had been an incident about a chemical leak and she couldn’t get the car out.
If you have information about the white truck, please call police on 101.