A commercial airline pilot has been arrested in Spain over his alleged role in Argentina's 1976-1983 "Dirty War".

Julio Alberto Poch, a Transavia airline pilot, was held at Valencia airport as he was about to fly a passenger plane to Amsterdam, Spanish officials say.

Mr Poch is wanted in Argentina for allegedly flying planes used to dump political opponents of the country's military regime into the sea.

Some 30,000 people disappeared or died during the junta's rule in Argentina.