A computer-generated image of a man who fell to his death from a footbridge over a busy Nottingham road has been released in a bid to identify him.
The thick-set man, believed to have been aged between 30 and 45, died on the A52 close to Lenton industrial estate on the night of 1 November.
He had no form of identification and extensive inquiries made throughout the UK have been unable to identify him.
Police are not treating the death as suspicious.
His fingerprints and DNA profile have been checked against national databases, but the searches have returned negative results.
CCTV footage from a wide area around the scene of the man's death has been checked but he does not appear on it, police said.
Insp Mark Stanley said: "We are disappointed that we have not been able to identify the dead man yet, but the inquiries we have made have been extensive.
"We have contacted all other police forces in the UK to check whether they have any missing persons who match the description of the dead man, but none have.
"We are now making international inquiries to try and put a name to this man who appears to have met such a tragic end in Nottingham."