SA school explosion causes burns

Up to four people, including a four-year-old girl, have suffered burns after an LP gas cylinder exploded at a school in South Australia's Barossa Valley.

The Metropolitan Fire Service (MFS) was called to the Lutheran primary school at Tanunda just before 9am on Monday.

"It's believed that gas from an LP gas cylinder came into contact with an ignition source and exploded, causing burns to up to four people," she said.

Ambulance officers are at the scene treating people.

There was no further risk to people in the area, the spokeswoman said.