A Baldivis woman is the third person to be charged over an alleged arson attack at a business in Port Kennedy.
The blaze destroyed seven vehicles at the commercial premise on the corner of Paxton and Fielden Ways, on June 14 leaving a damage bill of $200,000.
A 32-year-old man also from Baldivis and a 32-year-old Warnbro woman have also been charged over the blaze.
The investigation is ongoing, and officers urge anyone with any information relating to this matter, to contact Crime Stoppers on 1800 333 000 or 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.
Perth to Bunbury train service returns
Missing woman found safe and well
Community fed up with teenage hoons terrorising Halls Head oval
Southern suburbs electrician claims $1.8 million Lotto win
Works continue on Pinjarra's Munday Avenue extension
Halls Head support worker charged with historic child sex offences
Severe thunderstorm warning cancelled for Mandurah, Bunbury
Fortnightly red bin collections to remain in the City of Rockingham after council rejects motion
Rate rises on the way for Rockingham, Mandurah ratepayers