Detectives from Mitchell Crime Investigation Unit are seeking information into the final movements of Jodus Murphy.
The 18-year-old went missing from Frankston on 12 May and investigators believe he made his way to Seymour shortly after.
Jodus was located deceased beside the Goulburn River on 14 June.
Investigators are keen to speak to anyone who may have seen or had any interaction with Jodus between 13 May and 14 June.
His death is not believed to be suspicious.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or to submit a confidential report at www.crimestoppersvic.com.au
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