Congolese authorities on Thursday ordered the partial evacuation of Goma, a city that has been rocked by hundreds of earthquakes and seen large cracks appear in the earth in the aftermath of a volcanic eruption on its doorstep at the weekend.
More than 20,000 people are homeless and 40 still missing following Saturday evening's eruption, which sent rivers of lava flowing toward Goma, killing at least 31 and destroying more than 3,000 homes, according to the United Nations.
The lava from Mount Nyiragongo stopped just 300 metres short of Goma airport, the main hub for aid operations in eastern Democratic Republic of Congo.
Seismic and ground deformation data indicates the presence of magma under Goma, extending under Lake Kivu, said Ndima Kongba, the military governor of North Kivu province.
"Given these scientific observations, an eruption on land or under the lake cannot be ruled out at present, and it could occur with very little or no warning," Kongba said.
Ten neighbourhoods of the city needed to evacuate to Sake, another lakeside town around 21km northwest, he said.
"Evacuation is compulsory, those who do not adhere swiftly, carry unnecessary risks. A return home can only take place on the recommendation of the provincial authority."
On Wednesday the UN said it was temporarily relocating around 250 non-essential staff, around half of its aid workers, and about 1,500 of their dependents to the city of Bukavu, around 50 km south.


Sydney Airport flights disrupted due to air traffic controller shortage
Fire in rebel-held east Congo kills 24 schoolchildren
Trump says he does not regret Iran war despite potential impact on elections
Trump touts $5,000 payout if Republicans win as Vance waits in wings
Search expands after Philippine ferry fire kills five and leaves dozens missing
Trump says Iran war to end after US midterm elections
Cargo vessel fire at east China shipyard kills 25
US military says it struck vessel in Caribbean, killing 3
