Police are appealing for information after a suspected arson attack at a flat in Belper.
Emergency services were called to the ground floor flat on Hunter Road just before midnight on Monday, May 19.
The fire was contained within the bathroom of the flat and no one was injured.
A joint investigation is underway between police and the fire service but it is believed the blaze was started deliberately.
Witnesses or anyone with information is asked to call Amber Valley CID on 101 or Crimestoppers anonymously on 0800 555 111.