A man was arrested after a fire broke out in a house in Lancaster.
Emergency services were called to a terraced property in Lune Road at about 8.10pm on Monday.
Crews from three fire engines tackled the blaze in a first floor bedroom, using four breathing apparatus and a hose reel.
After searching the property, firefighters discovered there was nobody inside.
Police said a man, who lived in the house, had set fire to curtains and then “ran off”, before being tracked down by police.
A 28-year-old man was arrested on suspicion of arson.