A 32-year-old woman has been charged over an alleged fire at a commercial property in Port Kennedy.
The woman is accused of lighting a fire at the business on the corner of Paxton Way and Fielden Way about 9.40pm on June 14.
Seven vehicles were destroyed in the blaze, with an estimated damage bill of $200,000.
The Warnbro woman has been charged with criminal damage by fire and is next due to appear in the Rockingham Magistrates Court on August 15.
The arrest comes two weeks after police released CCTV of the alleged arson attack along with two vehicles of interest, a white Holden Statesman and a dark coloured Honda Accord that were seen in the area at the time of the fire.
The investigation is continuing and officers urge the drivers of the vehicles, or anyone with any information or vision relating to this fire, to come forward and contact Crime Stoppers on 1800 333 000 or online via www.crimestopperswa.com.au.
Rewards of up to $25,000 are available for information that leads to the identification and conviction of an arsonist.
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