A man is being questioned over a suspected arson attack in Caernarfon.
It follows a fire at a house in the Cae Llwybr area on Monday afternoon.
Police were called to the scene by North Wales Fire Service crews and arrested a 32 year-old man on suspicion of arson with intent to endanger life.
Detectives are appealing for witnesses - or anyone with information regarding the fire - to call 101 or use the live web chat, quoting reference no. Q185204.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.
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