Police have discovered themselves in a "very uncommon" scenario after being unable to determine a person who was hit by a practice a number of weeks in the past.
Officers are calling for assist to determine the person who has been in hospital for greater than a month after he was critically injured when he was hit by a practice between Royal Park and Jewell railway stations in Brunswick about 6.33pm on July 7.
The person, who's believed to be round 65 to 75-years-old, was taken to hospital with life-threatening head accidents and remains to be in a severe situation.
Police have been unable to ascertain his id regardless of "in depth enquiries".
The person had no cellphone, pockets or playing cards on him on the time of the incident.
Senior Constable Dean Pilati stated the person was non communicative, however had been ready in a position to mumble the names "Roy" and "Ryan" and "Coburg".
He stated it was not clear whether or not the person was referring to himself or somebody he is aware of.
Senior Constable Pilati stated police had door knocked individuals, checked lacking individuals knowledge bases, checked the person's DNA and checked with native homeless shelters, to no avail.
He stated it was "very uncommon" for police to be on this scenario.
He stated it was potential the person was from abroad.
Police have launched a facial composite picture within the hope somebody could recognise him.
He's described as Caucasian, about 175cm tall and of medium construct.
He has a distinguished mole beneath his left eye, no figuring out scars and no tattoos.
It's unknown precisely what the person was sporting on the time of the incident, however he was sporting black runners with white soles, black socks and a black belt.
Anybody who recognises the person or has info is urged to contact police.