Hyderabad, Jan 12 (IANS) Four persons were injured as two petrol tankers caught fire on the outskirts of Hyderabad on Friday, police said.

The incident occurred at a vehicle repair centre on Medipalli-Chengicherla road. Both the tankers and few vehicles were completely gutted.

A two-wheeler rider passing through the road sustained critical burns. The helmet-wearing man was found lying on ground, in deep shock. He was shifted to a hospital, where his condition is stated to be critical. All four injured were admitted to hospital.

Huge flames broke out from a tanker and engulfed another tanker nearby. The massive fire and explosion sent panic among the residents in the area. Fire engines rushed from various places to control the flames.

Police said they were investigating the cause of the fire. However, locals alleged that the fire broke out when some people were breaking the seal of the tanker to steal petrol. They claim that many tankers come to the place every day and this activity was going unchecked.

"There will be at least 10 tankers at this place every day but fortunately only two were there today, which limited the damage," said a resident.