Rourkela: Four persons were critically injured when a giant wheel collapsed during installation at Sector-16 field here on Sunday.
According to sources, the incident took place when the four were busy installing the giant wheel along with other joy rides at a Meena Bazaar for the upcoming Durga Puja festivities.
The injured persons were rescued and rushed to a nearby hospital.
On being informed, police reached the spot and started investigation into the incident.