The driver of a train which crashed in Spain last Wednesday was talking on the phone when it derailed, investigators say.

Francisco Jose Garzon Amo was speaking to members of staff at the state-owned railway company, Renfe, when the train left the tracks, travelling at 153km/h (95mph).

Crash investigators had opened the train's "black-box" data recorder to find the cause of the crash, which left 79 people dead.

Susana Mendonca reports.