A United Nations-backed radio station in Congo says at least 37 people have been killed and 22 injured in a bus crash.

Radio Okapi reported on Saturday that the bus carrying 70 passengers from Zambia got a flat tyre, ran into something and caught fire.

The accident happened on Friday in southeast Congo in Sakania territory near the border with Zambia.

It said the bus was travelling about 500 kilometres from the Zambian village of Kitwe to Luapula province, using a dirt road that cuts through part of Congo as a shortcut.

Radio Okapi reported that Zambian rescue workers were at the scene and the injured had been evacuated to medical centres.

Many roads in Congo are unpaved and poorly maintained.

AAP

Staff ReporterHOT NEWS
A United Nations-backed radio station in Congo says at least 37 people have been killed and 22 injured in a bus crash. Radio Okapi reported on Saturday that the bus carrying 70 passengers from Zambia got a flat tyre, ran into something and caught fire. The accident happened on Friday in...