Fire crews said the "significant" fire was out before it reached the main school
Police are searching for a group of teenagers after a primary school's shed was destroyed by a deliberate fire.
The blaze then spread to a nearby classroom at R. L. Hughes Primary School on Mayfield Street in Ashton-in-Makerfield, Wigan, on Friday evening.
Fire crews said the "significant" fire was out before it reached the main school.
Greater Manchester Police said they believe the fire was started deliberately.
Seven teenagers, aged between 14 and 17, are wanted as part of the arson investigation.
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