Thirteen people held for more than 18 years without trial in Eritrea have been released from a notorious military prison, relatives of the detainees have told the BBC.
Among those freed were several prominent figures, including 69-year-old Olympian cyclist and businessman Zeragaber Gebrehiwot.
They had been held at Mai Serwa prison, known for its harsh conditions and where many of the inmates are believed to be political prisoners.
An unnamed source who was once detained in Mai Serwa told the BBC the prisoners were arrested in October 2007 following an assassination attempt on Col Simon Gebredingil, a senior internal security officer in President Isaias Afwerki's government.
Around 30 people were initially detained, according to the source. Some have been released over the years, but about 20 remained in custody.
