Police, who have lodged a case in connection with today's fire-blast at Nagaram in the East Godavari district, said they were also investigating whether GAIL had taken necessary safety measures for the gas pipeline passing through the village.
According to police, leaked gas from the GAIL pipeline was ignited when a hotel owner lighted stove to make tea.
Police is also probing whether it was negligence that led to the fire or whether it was an accident, said Atul Singh, Inspector General of Police, North Coastal Zone.
"A case has been registered under section 174 of Criminal Procedure Code (unnatural death). It is being alleged that the leakage had been reported in the past few days...If it is so the case will be changed to 304 A of the Indian Penal Code (causing death by negligence)," he said.
The Razole police investigating the incident said some villagers claimed that they had approached GAIL authorities many times to report the gas leaks in the area, pressing for repairs, but no action was taken.