At least five people have been shot at a school in Sweden amid reports of a "shooting with an automatic weapon".

"Several people" were initially said to be injured at Risbergska School in Orebro, southern Sweden, local media reported - with police locking down the building and urging the public to stay away.

"Listen to the police officers at the scene," a police statement read shortly before 12.30 UK time. "The operation concerns threats of deadly violence. The operation is still ongoing."

A later statement confirmed: "There has been a shooting at the school. Four people have been shot. The extent of the injuries is unclear. The operation is still ongoing.

Footage from the scene shows a number of armed police and emergency services amassed outside the school

"The charges are currently attempted murder, arson and an aggravated weapons offence."

Footage from the scene shows a number of armed police and emergency services amassed outside the school - with some people thought to still be inside.

"We can't go out, it's dangerous for us. We've heard several shots outside," one person told Swedish outlet Aftonbladet.