A second person has been arrested as part of the investigation into the supermarket terror attack

A French policeman who was shot during yesterday's terror attack has died of his injuries.

The 45-year-old swapped himself with a female hostage in a supermarket in southern France - before the gunman was killed.

He left his mobile on so officers outside knew what was happening.

Prosecutor Francois Molins described him as a hero after the attack.

Anti-terror police have made a second arrest in connection with their investigation.

A 17-year-old suspect who knew the attacker has been detained.

A woman he knew was held yesterday.