The Mexican Navy says its forces have captured one of the country's most notorious drug cartel leaders. Costilla was arrested Wednesday in the northeastern state of Tamaulipas.
Costilla, also known as "El Coss," joined the Gulf Cartel in the 1990s when it was run by Osiel. Costilla remained with the cartel after Osiel was arrested in 2003, and assumed control in 2010 after Osiel's brother was killed in a shootout with Mexican troops.
Mexican authorities had offered a $2.2 million award for his Costilla's arrest, with the U.S. State Department offering an additional $5.5 million bounty.