A gunman has opened fire in a Spanish supermarket shouting 'Allahu Akbar'.

The attacker, who was reportedly carrying gasoline and gunpowder, walked into the Mercadona shop, in the northwestern region of As Lagoas, before opening firing shots into the air.
Several shoppers were inside the supermarket when the man entered and fired several shots into the air, causing emergency services to swoop on the building.

According to police sources, the young man has psychological problems and is lives next-door to the shop.

The incident, which happened at around 2pm, did not result in any injuries but left many extremely shaken.