A house has been destroyed in a suspicious fire near Fremantle overnight.
Fire crews were called to the property on Hope Street in White Gum Valley around 11.50pm on Wednesday.
The blaze caused around $200,000 damage to the timber and fibro home.
No one was inside at the time and a man aged in his 30s is being questioned by police.
Anyone with any information is asked to call Crime Stoppers on 1800 333 000 or make a report online at www.crimestopperswa.com.au.