* "El Coss" arrested in northeastern Mexico
* Arrest comes days after capture of other Gulf Cartel leader
The Mexican Navy has captured one of Mexico's most wanted drug bosses, the head of the Gulf Cartel, the government said late Wednesday, in the latest high-profile arrest in President Felipe Calderon's crackdown on organized crime.
The government said it would reveal more details about the capture of Jorge Costilla, alias "El Coss," early on Thursday. Such figures are often paraded in front of the media, handcuffed and dressed in flak jackets.
A government security source said Costilla was detained in Tampico in northeastern Mexico, where the cartel was active, without putting up a fight. The U.S. State Department had a reward of up to $5 million for Costilla's capture.
No other details were immediately available.
Last week, the Mexican Navy captured senior Gulf Cartel member Mario Cardenas, alias "Fatso," also in the northeastern state of Tamaulipas where Costilla was caught.
The cartel's power has waned during a feud with the brutal Zetas gang, which acted as enforcers for the Gulf Cartel before breaking with their employers. That conflict has caused some of the most sickening killings of the drug war.
There have been more than 55,000 drug-related deaths during Calderon's six-year offensive against cartels, and incoming President Enrique Pena Nieto has vowed to quickly reduce the number of beheadings and mass executions.
Pena Nieto takes office on Dec. 1.