At least 21 passengers, including children, were burnt to death when their bus was ambushed by gunmen in the north-western Nigerian state of Sokoto, police say.
They were travelling from the town of Sabon Birni to the town of Isa near the border with Niger.
Police spokesperson Sanusi Abubakar said that several others are being treated in a hospital for severe burns.
Some reports suggest the number of those killed is around 30.
One of those involved in evacuating the casualties described the scene as “horrendous” and that most of the victims were burnt beyond recognition.
The attack happened late on Monday but details are just emerging due to poor communication services in the area.