Tens of thousands of people fled the eastern DR Congo city of Goma on Thursday towards neighbouring Rwanda after authorities warned of possible new eruptions from the Nyiragongo volcano, including underneath the nearby Lake Kivu.

The city has been on edge since Africa's most active volcano erupted on Saturday, leaving at least 32 people dead.

"Right now we can't rule out an eruption on land or under the lake, which could happen very soon and without warning," said General Constant Ndima, the military governor of North Kivu province.

He said an evacuation of part of the city had been ordered, and urged residents to leave calmly.

Tens of thousands of residents fled Goma last weekend after Nyiragongo erupted on Saturday night -- many across the nearby border to Rwanda -- before returning.

But strong aftershocks have continued to rattle the city, leading some buildings to collapse and leaving residents fearful.

The volcano spewed out two rivers of molten rock during the eruption, one of which came to halt on the edge of Goma after obliterating villages in its wake.

Local volcanologists have recorded hundreds of aftershocks since Nyiragongo, which sits just a dozen kilometres (eight miles) from Goma, roared back into life.

Ndima said that the latest data including on "deformation of the ground indicates the presence of magma under the urban area of Goma, with an extension under Lake Kivu".

"The situation can change rapidly, and is being constantly monitored," he said in a broadcast address.

The governor said there were extra risks associated with the interaction between magma and the lake, including "the emission of potentially dangerous gases at the surface".

Ndima said authorities had arranged transport towards Sake, around 20 kilometres (12 miles) west of Goma, in each of the ten districts of the city affected.

"People should take the bare minimum with them, to make sure everyone has a chance to get on," he added.

- Thousands homeless -

The announcement was followed by the immediate departure of tens of thousands of people towards the southwest, in the direction of the Rwandan border, an AFP correspondent said.

Vehicles of all kinds, including cars full of families, vans and trucks waited to cross into Rwanda.

The streets in the southern part of Goma were congested, with people walking or running, carrying mattresses, sports bags or a few meager possessions in plastic bags, and holding on to frightened children.

Despite the traffic jams and the sudden influx, the crossing to Rwanda was proceeding in relative calm, while lines of vehicles were also heading toward Sake.

The ten districts of Goma under official evacuation orders are at possible "lava exit points", Ndima said.

"It is very important to stay away from the lava flows, because of the danger of death from suffocation or burns.

"The police will patrol to secure property and people," he said, concluding his remarks with: "May God look after us."

The United Nations said 32 people have died and 5,000 are feared to be homeless.

The UN humanitarian affairs office OCHA said 24 of the victims were burned alive by lava, adding that 40 adults have been reported missing.

A so-called strato-volcano nearly 3,500 metres (11,500 feet) high, Nyiragongo straddles the East African Rift tectonic divide.

Its last major eruption, in 2002, claimed around 100 lives.

DR Congo volcano aftershocks rattle residents, damage buildings
Goma, Dr Congo (AFP) May 26, 2021 - Aftershocks from the Mount Nyiragongo volcano in eastern DR Congo rattled the nearby city of Goma on Wednesday, four days after its eruption, badly damaging several buildings and prompting hundreds of residents to flee and the UN to relocate some of its staff.

The tremors were felt throughout the night. Two powerful shocks from Africa's most active volcano caused terrified people to run out of their homes.

The seismic monitoring agency RSM in neighbouring Rwanda, whose border runs close to Goma, said it had detected a 5.1-magnitude quake at 5:46 am (0346 GMT), followed by a 4.1-magnitude tremor at 6:12 am.

The Goma Volcano Observatory (OVG) said that it registered more than 269 tremors between Saturday and Tuesday, with one measuring 5.2 magnitude on the Richter scale.

Authorities shut down the market, shops and several building sites as a precaution.

Hundreds of residents began leaving the city again in the afternoon, heading south-west to the Masisi region or to across the border to Rwanda. And some headed to Goma's port to take a boat to safety.

The UN said it was "relocating" non-essential staff, both national and international, out of Goma city. And many of the other international organisations and NGOs that have offices there were doing likewise.

The United Nations says 32 people have died and at least 5,000 are feared to be homeless after the volcano erupted on Saturday.

- Burned alive -

The UN humanitarian affairs office OCHA said 24 of the victims were burned alive by lava, adding that 40 adults have been reported missing.

By the time the eruption ended on Sunday the volcano had spewed out two rivers of molten rock, one of which came to halt on the edge of Goma after obliterating villages in its wake.

The lakeshore city of 1.5 million people lies around a dozen kilometres (eight miles) from the volcano.

A two-storey building on a road to the southwest of the city partially collapsed overnight, but without apparently causing any casualties.

Two other buildings were badly damaged, while another building in the city's Katindo district had completely collapsed.

Property damage was also reported in Gisenyi, a Rwandan town on the other side of the border, according to social media.

On Tuesday, at least four buildings partially collapsed in Goma, including a three-storey structure in which eight people were seriously injured, emergency workers said.

- Government aid -

Long cracks, several dozen centimetres (around two feet) wide in places, have also opened up in the ground since the eruption -- some of them gushing water, further stoking residents' anxiety.

Some of the fissures opened up in roads, hindering traffic.

Fearful of their homes collapsing, many people slept outside on mattresses, the luckier ones under mosquito nets.

Local volcanologists have recorded hundreds of aftershocks since Nyiragongo roared back into life, including 119 on Monday alone, but say there is hope that the much-feared volcano will calm down.

Government officials who visited Goma on Monday announced several relief measures including paying for victims' funerals, supplying roofing material, food and medicines, as well as psychological counselling and emergency repairs of damaged infrastructure.

But residents remain jittery. Hundreds are sheltering in a Rwandan refugee camp, and many are continuing to flee there, according to the Rwandan emergency situations ministry.

Boats are ferrying hundreds of people from Goma to Bukavu, around 70 kilometres (45 miles) down the shore of Lake Kivu.

"Everyone's afraid their house could collapse," said motorbike taxi driver Jacques Sibomana. "Children won't sleep" for fear of a new eruption.

"I am very afraid," said Goma resident Angelique Tumusifu. "There are rumours of another eruption after all the tremors that have become so dangerous."

A so-called strato-volcano nearly 3,500 metres (11,500 feet) high, Nyiragongo straddles the East African Rift tectonic divide.

Its last major eruption, in 2002, claimed around 100 lives.

The UN Children's Fund (UNICEF) said on Tuesday that at least 150 children had become separated from their parents after the eruption, and that another 170 were missing.

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Tourists and gorillas 'safe' after DRC volcano eruption
Goma, Dr Congo (AFP) May 23, 2021
Tourists who were near the crater when the Nyiragongo volcano in the Democratic Republic Congo erupted are safe, the Congolese Institute for the Conservation of Nature (ICCN) said Sunday. Nor were the rare mountain gorillas in the Virunga National Park threatened by the eruption, the institute added. "The tourists present yesterday at the crater are safe and sound", the institute, which oversees the wildlife sanctuary, said on Twitter, without indicating their numbers or nationalities. The p ... read more