It is believed Mr Powell, aged 23, may be able to assist with an ongoing matter.
Mr Powell is described as fair skinned, 180cm tall, of slim build, with brown hair and brown eyes.
Members of the public are advised not to approach him, and to report any sightings to Police immediately on 131 444.
Anyone with information regarding his whereabouts is asked to call Crime Stoppers on 1800 333 000, or report the information online at www.crimestopperswa.com.au.
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