El Salvador has ordered President Salvador Sánchez Cerén to testify in the 40 year old case of kidnaping and murder of a South African diplomat.
Archibald Gardner Dunn was seized by armed men outside the embassy on 28 November 1979. Then a year later, the left-wing rebel group Popular Liberation Forces said it had killed the diplomat.
President Sánchez Cerén was the group’s second in command at the time.
Dunn’s family has brought in the lawsuit, saying they want to know what happened to him. The family had paid a $2m (£1.5m) ransom but even then kidnappers killed Dunn.