A NARRE Warren man, 36, has been charged with the murder of Mary Cook, 37, who was found dead in her house at Darling Way, Narre Warren in December.
Her body was discovered after the house was burnt to the ground.
Last week police appealed for an anonymous caller to Crime Stoppers to make contact again.
As part of their probe, police searched two locations in Narre Warren.
They also recovered a knife from grassland in Golf Links Road.
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