A GRENADE was thrown into a packed bar by a man with an assault rifle in France leaving 12 injured before the gunman fled.

Six people were also seriously injured in the chilling attack on Wednesday night in Grenoble’s Olympic Village.

Prosecutor François Touret de Coucy said: “A person came in, threw a grenade, didn’t say a word, it seems, and then fled.”

The assailant did not use the Kalashnikov-type assault rifle that he reportedly had.

Mayor of Grenoble, Eric Piolle, said he condemned the “criminal act of unprecedented violence that occurred in a business in the Olympic Village district”.

The grenade’s explosion shattered the windows at the front of the bar and sent glass flying across the establishment as people were drinking.

Those injured were left covered in blood in the parking lot underneath survival blankets in the cold winter night as emergency services treated them.

All the injured were taken to the Grenoble Alpes University Hospital, BFMTV reported.