More than 100 people have been killed in Kenya in Africa after a lorry carrying petrol exploded.
The petrol tanker was near the town of Molo when it crashed, spilling petrol over the road. Lots of people gathered round to try to collect the fuel.
At some point that spilt petrol caught alight and the tanker exploded, killing at least 111 people and hurting more.
Officials don't know exactly how the fire started, but are worried that the number of people killed could rise.
Some people think a lit cigarette may have started the blaze, while others say it was lit on purpose.
The incident comes just days after a devastating fire at a supermarket in the Kenyan capital Nairobi killed at least 25 people.