 Kargbo was born and raised in the east end of Freetown, Sierra Leone to Temne parents.He began his football career with East End Lions in the Sierra Leone National Premier League.Kargbo is commonly known in Sierra Leone by his nickname Pablo Cham, his former teams are Sierra Rangers, Sporting Charleroi in 2003-2004 sydney was voted best youth player by the sporting charleroi fans and joined 2005 to FC Brussels after 42 games in two year was released from FC Brussels.