At least 35 people were killed on Monday and hundreds injured when a gas tanker exploded in the northern Nigerian state of Nasarawa and started a blaze, the state emergency agency said.

“We are trying to ascertain and liaise with other stakeholders, to get an accurate figure of what was involved on human life and people that were injured,” said Chief Fire Officer, Nasarawa State, Dalhatu Dogara.

Footage from Nigerian Television Authority NTA showed fire, smoke rising and injured people being carried away on a stretcher.

The State Emergency Management Agency (SEMA) official said the accident happened at a petrol station along the Lafia-Makurdi road linking the capital city of Abuja with northern and southern Nigeria.

Usman Ahmed, acting director at SEMA, said the truck exploded at the point of discharging the gas, citing a witness account. The agency was investigating the incident, he said.

“We have confirmed 35 dead and over a hundred injured. Most of those that died rushed to the accident spot to see what was happening,” Ahmed told Reuters.

Traffic accidents are common in Nigeria, where roads are bad and safety standards poor.