At least 75 people died when a leaking petrol pipeline exploded in the centre of a slum in Kenya's capital Nairobi.
Flames shot 300 yards, setting shacks ablaze and incinerating scores of people who had been trying to collect the fuel in buckets and basins.
"I've lost count of the number of bodies," said Wilfred Mbithi, the policeman in charge of operations as he stood at the scene. "Many had dived into the river trying to put out their flames."
Provincial Commissioner Njoroge Ndirangu said the death toll from the blast will rise.
At least 112 burn victims have been taken to Kenyatta National Hospital, many of them children. Most had burns covering more than a third of their bodies and some were unrecognisable.
In 2009 at least 120 people were killed as they were trying to scoop fuel spilled from a crashed petrol tanker in Kenya.