Part of Steerforth Drive was closed on Sunday evening following a fire at a Coodanup church, which caused an estimated $500,000 worth of damage.
The Church of the Way blaze started about 7pm with residents living nearby reporting explosions.
The cause of the fire is not known, but it is being treated as suspicious.
The fire is understood to have affected an op shop attached to the church.
Arson squad investigators will attend the site on Monday morning.
Anyone with information on the incident is asked to contact Crime Stoppers on 1800 333 000.
