People Sick After Spray Incident
Four people including a pregnant woman were taken to hospital after a substance was sprayed at a city shop.
A woman went into the O2 shop on Clumber Street in Nottingham and sprayed the substance at about 1020 BST, police said.
Two men and two women were taken to the Queen's Medical Centre with nausea and vomiting. They have now been released.
The shop was closed and surrounding buildings were evacuated. Part of Clumber Street is still cordoned off.