Colombian authorities on Friday extradited the sister of the alleged leader of the Clan del Golfo crime gang to the United States, where she is wanted for laundering proceeds from drug trafficking, the National Police said in a statement.

The 39-year-old Nini Johana Usuga David, alias "La Negra," is accused of belonging to a transnational drug-trafficking organization and also of "bolstering the illicit revenues" that the Clan del Golfo - Colombia's most powerful criminal outfit - received from the drug trade, that law enforcement agency added.

"Alias 'La Negra' was responsible for giving a veneer of legality - via the laundering of assets - to the money derived from this criminal gang's drug trafficking," the statement added.