Hyderabad: Six men trapped inside an illegal cooler manufacturing factory in Rajendranagar were burnt alive in an early morning fire on Wednesday that destroyed the unit within minutes.

Residents in the locality along PVNR Expressway were jolted out of sleep by the sound of blaring fire engines and frantic screams for help from 'Om Avone Factory'.

Neighbors tried to drive open the cooler manufacturing unit, but it was locked from inside by migrant workers from Jharkhand and Bihar. Six burnt bodies were found, out of which four are workers and two other bodies were not workers and are yet to be identified.

Officials of Telangana State Disaster Response and Fire Services department, who received an emergency call at around 5.00 am, said five fire tenders and two bike borne fire fighters rushed to the spot, but the structure was gutted within minutes.

After bodies were exhumed from under the wreckage, deputy commissioner of police PV Padmaja sent them to Osmania General Hospital for autopsy.