Tens of thousands of people have been evacuated from the city of Goma in the Democratic Republic of Congo over fears of another volcano eruption.
Local authorities have said Mount Nyiragongo could erupt once again with little warning.
The volcano, located 10km (six miles) from Goma, erupted over the weekend, killing 32 people and leaving thousands homeless, according to the UN.
Thousands fled then but some residents had started returning.
The area has since been rattled by aftershocks and two cracks spanning several hundred metres in length have appeared in the ground.
On Thursday Ndima Kongba, the military governor of North Kivu province, said magma had also been detected underneath Goma and nearby Lake Kivu.
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