An attempted attack by a heavily armed man on a train in France last week was premeditated and well prepared, according to a French prosecutor.

Ayoub El-Khazzani, 25, was carrying 270 bullets for his assault rifle and a bottle of petrol, prosecutor Francois Molins told reporters on Tuesday.

The Moroccan’s phone showed that he had watched a jihadist video shortly before launching the attack, Mr Molins added.

He was overpowered by passengers on the Thalys train on Friday. No-one died.

Three Americans and one Briton who tackled the gunman were awarded medals for their bravery.