Eritrea’s government has found a novel way to stop its sportsmen defecting every time they play abroad by forcing footballers to pay a bond and surrender their title deeds before leaving the country.

Members of the Eritrean football team each reportedly paid a £5,600 guarantee before being allowed to fly to Namibia for a World Cup qualifier, Radio Erena, a broadcaster run by Eritrean exiles in Paris, reported.

“This has become the norm in Eritrea for home-based players to proved a guarantee before travelling to an international tournament,” the radio station quoted a source as saying.

Widely seen as Africa’s most repressive state, Eritrea has struggled in the past to stop its sporting stars vanishing after away fixtures.

When the national football team last tried to qualify for the World Cup in 2015, ten players refused to return home after a game in Botswana. Three years earlier, 15 members of the squad, and the team doctor, vanished in Uganda.

It is not just footballers. A third of the Eritrean team that participated in the Olympic Games in London in 2012 claimed asylum, including the athlete who carried the national flag during the opening ceremony.

As many as a tenth of Eritrea’s 5m people — including at least 120,000 asylum seekers in Europe — have fled the regime of Isaias Afwerki, a despot who has never allowed an election in the 26 years he has been in power.