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Two cases of arson were reported in Oxfordshire on Sunday night.
In Headington a grass fire in a nature reserve was doused out by fire crews.
An Oxfordshire Fire and Rescue Service spokesman said the blaze, reported at around 7.45pm, measured 20 metres by 20 metres at Lye Valley.
And in Banbury firefighters were called to a fire at the back of a Co-op.
The blaze, put out by one fire crew, began in a plastic flower display at the Queensway branch at around 11.24pm.
No nearby buildings were affected.
A spokesman for the fire service said both cases were believed to be arson and Thames Valley Police have been informed.
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