41.   Another cartel leader, Helmer Herrera, remains at large.

42.   Authorities said Tuesday they are investigating the police killing last week of Cali drug cartel leader Jose Santacruz Londono amid doubts about the official police account.

43.   Authorities believe the food and cellular telephones were brought to Ivan Urdinola and Henry Loaiza, another reputed cartel leader who surrendered in June.

44.   Authorities posted wanted posters nationwide and dropped fliers from helicopters with phone numbers to call with information about the cartel leaders.

45.   Bloque commanders say their group is autonomous and takes orders from no one, including President Ernesto Samper, who has been accused of having links to cartel leaders.

46.   Both were jailed nearly a year ago along with other top cartel leaders.

47.   But cartel leaders elude capture, often by bribing police.

48.   But cartel leaders have eluded capture.

49.   Cali cartel leaders face ruthless rival.

50.   Cartel leaders had made conditional surrender offers in the past, but the government refused to concede to demands.