Argentine authorities have arrested three former policemen in connection with what became known as flights of death during military rule.

They are accused of being the crew when French nun Leonie Duquet and rights activist Azucena Villaflor were thrown from a plane in 1977.

Their bodies washed ashore and were buried in an unmarked grave until their remains were identified in 2005.

Hundreds of political prisoners are known to have died this way.

A judge on Tuesday ordered the arrest of former police officers Enrique Jose De Saint Georges, Mario Daniel Arru and Alejandro Domingo D'Agostino.....