A damaged tanker truck exploded in eastern Tanzania on Saturday as people were trying to siphon fuel out of it, killing at least 57, police said.
The explosion occurred when the vehicle overturned near the town of Morogoro, a settlement around 200 km west of the capital Dar es Salaam.
The police said many of those killed and injured were taxi drivers and those who had been siphoning petrol from the tanker when it burst into flames.
Al Jazeera's Raheela Mahomed reports.
"There are vehicles that carry unsafe fuel oil, as in this case in Morogoro, there are others that carry toxic chemicals or explosives, let's stop this practice, please", he said.
Firefighters fro Tanzania People's Defence Force (TPDF) and Fire Brigade have since been carrying out a rescue operation.
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Video clips circulating on social media showed the charred remains of dozens of young men and burnt motorbikes.
They took the bodies to the mortuary at Morogoro Regional Hospital.
Daniel Ngogo, a witness, told Reuters: "The situation is really bad".
The road connecting Morogoro with Dar es Salaam, the country's most populous city and former capital, is one of Tanzania's key throughways, used to transport imports and exports to and from the coast.
Residents are routinely killed by explosions while stealing fuel from incapacitated tankers in East Africa.
Almost 80 people died in May in a similar incident near the airport of Niger's capital Niamey.