A fire at Bentley Plaza has caused damage worth about $2 million is being investigated by the arson squad.
Police and the Department of Fire and Emergency Services were called to the shopping centre at around 1:30am, following reports of a structural fire at the shopping centre.
The fire has caused $1.7 million dollars worth of damage.
The fire is being treated as suspicious.
Police would like to speak to anyone near the shopping centre between midnight and 3am who may have seen any suspicious people or vehicles in the area.
Anyone with information is asked to call Crime Stoppers on 1800 333 000 or report the information online at www.crimestopperswa.com.au.
Rewards of up to $50,000 are available for information that leads to the identification and conviction of the arsonist.