West Australian police are hoping the public will help them piece together what happened to a man whose head was found washed up in a plastic bag on a beach off Perth.
An 11-year old girl holidaying with her family at Porpoise Bay on Rottnest Island made the horrific discovery last Sunday when she opened the plastic bag and saw a human ear.
Police have confirmed the head belongs to a Caucasian male, possibly aged between 30 and 60.
Seven of the man's upper front teeth were missing - and had been for some time - but the man did not wear a plate or dentures, forensics have revealed.
His other teeth were also in poor condition.
Police said the man did not have any piercings, but had a full beard and moustache.
The discovery is being treated as a murder, but police still don't know who the man is.
Police and State Emergency Service volunteers finished searching the beach on Tuesday afternoon but did not find any other human remains.
Some personal items were collected but it is not known if they are connected to the case, police said.
Crime Stoppers has received several calls from the public that are being assessed and investigated.
Anyone with further information is asked to call Crime Stoppers on 1800 333 000.