The Mexican Navy said on Wednesday, Sept 12, it captured one of Mexico's most wanted drug bosses, the head of the Gulf Cartel, in what would mark a major victory in President Felipe Calderon's crackdown on organized crime, Reuters reported.

The Navy said it will give more details about the arrest of the man it believed to be Jorge Costilla, alias "El Coss," when it parades him in front of the media early on Thursday.

A government security official said Costilla, 41, was detained in Tampico in northeastern Mexico, where the cartel is active, without putting up a fight. The U.S. State Department has a reward of up to $5 million for his capture.

No other details were immediately available.

The arrest of the suspected capo comes barely a week after the Mexican Navy captured senior Gulf Cartel member Mario Cardenas, alias "Fatso," also in the state of Tamaulipas where Costilla was caught.