A former boyfriend of singing star Charlotte Church was being hunted by police in connection with multi-million pound heroin haul.
The Metropolitan Police are seeking Kyle Johnson, 24, who used to date the Welsh singer until they broke up in 2005.
He is wanted for questioned over the supply of a "large" seizure of the class A drug, the force said, believed to be as much as £20 million pounds worth.
Police added that he was living in the Stratford area of east London until last month, and although he has strong links to Cardiff and Wales, may still be in the English capital.
Johnson, originally from the Ely area of Cradiff, is described as light-skinned black, 6ft 1ins of average build with short shaved black hair. He has a Welsh accent.
The Met said: "Anyone with information regarding his whereabouts is urged to contact 0208 345 0050 or to remain anonymous, please contact Crimestoppers on 0800 555 111."
Johnson enjoyed an 18-month relationship with Church, 22, who sprang to fame as a child singer. She is now settled with Welsh rugby star Gavin Henson, with whom she has had two children.
