Police have returned to the shallow grave where Jill Meagher's body was found last week to search for evidence.
Gisborne South locals said police appeared to be searching for something on quad-bikes on Black Hill Road, where Ms Meagher's body was found late on Thursday night.
A police spokeswoman confirmed officers were on the scene again today "as part of the investigation", but could not give any further details.
A plaque has been erected at the site, which has been visited by dozens of mourners since Ms Meagher's murder.
An inscription on the plaque reads "loved by family, friends and many Australians whose hearts have been touched".
While the Macedon Ranges Council and Melton City Council were unsure if the site was within their boundaries, both said they had not erected the plaque, which was set in a stone and placed among the floral tributes.
Black Hill Road is about a 15-minute drive off the Calder Freeway, and about a 45-minute drive from Sydney Road in Brunswick, where Ms Meagher was last seen.
Sydney Road has been showered in bouquets of flowers, which were first placed outside Duchess Boutique, where Meagher was last caught on camera, but have now been moved to the nearby Baptist Church.