Police are turning to the community, knocking on doors to try to solve the murder of Melbourne teenager Cayleb Hough.
The 17-year-old's remains were found in a shallow mineshaft near Seerey Track at the Lerderderg State Park in Bacchus Marsh on March 10, months after he was last seen in a car with another man in December.
It's unclear if the Chelsea Heights teenager was killed in the park, or placed there, police say.
A missing persons squad will be going door to door handing out pamphlets to residents in the Doveton and Springvale South areas from 9am on Thursday in hopes of turning up new information.
Police have appealed for witnesses who may have seen a pair of black Adidas high tops and Samsung mobile phone that are believed to have been discarded in the area, likely from a taxi on the night of December 21.
