At least 23 people were killed and six others sustained minor injuries after the gunmen attacked the bus, the motive for which was unclear.
The bus was full of children returning from school as an unidentified gunman opened fire on the vehicle killing three and injuring another.
The inferno occurred near Kibuba along national route one between Kinshasa and Kikwit around 180 km from the capital Kinshasa.
The speeding bus was travelling from Sialkot city to Dera Ghazi Khan in eastern Punjab province when it hit a container truck on the highway.
At least 19 people were killed and 50 others injured after a speeding bus, with pilgrims returning from southern province of Sindh, overturned in Khuzdar, a district in Balochistan province.
The bus was travelling from Cairo when it turned over and was hit by the truck on a road in the southern province of Assiut, 320 kilometres south of Cairo.
UK Prime Minister Boris Johnson “deeply concerned” by violence that injured dozens of police officers in recent days amid frustration at new trade barriers between Northern Ireland and the rest of the United Kingdom following Brexit.
A gang last week took 53 people hostage, including nine children, from a state-owned bus in Niger’s Kundu village.
At least 37 people have died and 18 others are seriously injured after the accident in Cameroon’s western village of Nemale.
Road accidents in the South Asian nation kill thousands every year because of lax enforcement of traffic law, bad road condition and poor signalling system.
Police say at least 25 people have killed when a passenger bus plunged into a ravine on Indonesia's Sumatra island after its brakes apparently malfunctioned.
At least 35 people were killed and 27 others wounded in western Afghanistan when the bus they were travelling in hit a roadside bomb, officials say, a day after the UN warned civilians were dying at "shocking" levels in the war-torn country.
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