An escaped prisoner who has been on the run for 10 days may still be at large in the Oxford or London area, police have said.
Rad's hair was shaven off at the time of his escape, police said.
Jahed Khan Rad, also known as Jamed Khan Rad, is a convicted drug dealer who was serving his sentence at Bullingdon prison, near Bicester, Oxfordshire, when he escaped on 8 August.
Officers originally believed he fled Britain to see family in Germany, because he holds German nationality.
But new intelligence shows the 21-year-old, of Afghan origin, is either in Oxford or London.
Detective Sergeant Bob Gray said: "Recent intelligence suggests that Rad is still in this country, possibly in the Oxford or London area.
"We do not consider him to be a danger to the general public but if he is seen we would ask people not to approach him but to contact us.
"This man is a convicted drug dealer who has a considerable sentence still to serve.
"Justice is not being served while this man is at large."
Rad was originally arrested while living in Oxford and later convicted at Oxford Crown Court in October 2001.
He had served two years of a six year sentence for drugs offences when he absconded.
A criminal investigation is now under way into the circumstance surrounding his escape.
He is of Arab/Asian appearance and has black hair which was shaven off at the time of his escape, police said.
He has brown eyes, is of medium-build and is around 5 ft 9 in (1.75 m) tall.