Detectives have released CCTV images of a man wanted for questioning over a fire at the Mandurah Forum shopping centre.
Police say the fire was lit inside the building on Pinjarra Road sometime between 9pm and 10pm on May 13.
The blaze caused damage to some "building related equipment".
Anyone with information regarding this incident, or who recognises the person pictured, is asked to call Crime Stoppers on 1800 333 000 or report the information online at www.crimestopperswa.com.au.
Rewards of up to $25,000 are available for information that leads to the identification and conviction of an arsonist.