Saber Haldari wanted in relation to child sex offences
Police are hunting a man they believe poses a serious risk to children.
Saber Haldari is wanted in connection with sex offences committed against a young boy in Bristol between January and August last year.
Mr Haldari, who is believed to be in the UK illegally, has links to both the Afghan and Iranian communities and may have travelled to Birmingham, London or Leeds, Avon and Somerset Police said.
His date of birth is not known but he is believed to be about 30 years old.
Det Con Katherine Flanagan, of the Public Protection Unit in Bristol, said: "Haldari is wanted in connection with serious offences and we believe he poses a significant risk to children.
"He is described as about 5ft 8in, of medium build, with short dark hair. He is clean shaven and has a square face.
"If anyone has seen him or knows where he is, please call us via the 24-hour non-emergency number 101."