The incident happened at Morogoro, around 120 miles west of the capital Dar es Salaam.
Last month, at least 45 people were killed and more than 100 injured in central Nigeria when a petrol tanker crashed and then exploded as people were trying to gather fuel.
Al Jazeera's Raheela Mahomed reports.
Wilbrod Mutafungwa, the town's police commissioner, told reporters that work was ongoing to reach a "conclusive" number of those killed.
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This is the first withdrawal from a PGA Tournament since the Farmer Insurance Open at Torrey Pines in San Diego back in 2015. The 2019 BMW Championship is a PGA Tour event slated for August 15-18, at Medinah Country Club, in Medinah, Illinois.
There is limited awareness among many people about the danger from explosions of damaged fuel tankers, said Henry Bantu, a road safety expert who runs the Tanzania-based Safe Speed Foundation.
Firefighters try to extinguish a patrol tanker blaze, Saturday, Aug. 10, 2019, in Morogoro, Tanzania.
A video posted on social media showed dozens of people carrying yellow jerricans around the truck.
Bodies of those who succumbed have been moved to Morogoro Regional Hospital.
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She will play the victor between Belinda Bencic and Elina Svitolina , both former Rogers Cup champions, in the quarterfinals. Bouzkova led fourth-seeded Simona Halep of Romania 6-4 when the Wimbledon champion retired because of a leg injury.
EXPLOSION: Emergency services are dealing with the horror scene in Tanzania (Pic: TWITTER/EASTAFRICATV) "The situation is really bad".
Incidents of this nature are relatively common in parts of Africa where individuals are willing to take huge risks to remove fuel from vehicles and pipelines.
In May, more than 50 people died in Niger when a tanker exploded.
In May, a similar incident occurred in Niger just a short distance from the airport in the capital Niamey, leaving nearly 80 people dead.
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