A group of scientists due to work together for months in a remote Antarctic research station has been rocked after a member of the team was accused of assault.

About 10 researchers typically stay at the South African-run station, which sits about 170km (about 105 miles) from the edge of the ice shelf and is difficult to reach.

But a spokesperson for the South African government told the BBC “there was an assault” at the base, following earlier allegations of inappropriate behaviour from inside the camp.

In a further message seen by the BBC, the South African environment ministry said it was responding to the concerns with “utmost urgency”.

South Africa’s Sunday Times, which was first to report the story, said members of the team had pleaded to be rescued.

The ministry also said that those in the team had been subject to “a number of evaluations that include background checks, reference checks, medical assessment as well as a psychometric evaluation by qualified professionals”, which all members had cleared.

The Sanae IV research base is located more than 4,000km from mainland South Africa and harsh weather conditions mean scientists can be cut off there for much of the year.

South African research expeditions have been taking place to Antarctica since 1959.

Normally, the expeditions run without incident despite the challenging conditions.

But on Sunday, the South African Sunday Times reported that one member of the team had sent an email warning of “deeply disturbing behaviour” by a colleague.

A South African government spokesperson told the BBC that the alleged assault was triggered by “a dispute over a task the team leader wanted the team to do – a weather dependant task that required a schedule change”.

Incidents in Antarctica are rare, but not unprecedented. In 2018 there were reports of a stabbing at the Russian-operated Bellingshausen research station.

Psychologists point to the effect that isolation can have on human behaviour.

“One thing we know from these rare occurrences, when something bad happens in enforced isolation or capsule working, is that it’s often the small things, tiny things that can blow up into conflict,” said Craig Jackson, professor of workplace health psychology at Birmingham City University.

“So issues about hierarchy, about workload allocation, even small things about leisure time or rations or food portions can rapidly flare up to become something much larger than they typically are,” he told the BBC.

Additional reporting by Ed Habershon and Miho Tanaka