More than 47,500 people have died in drug-related violence in Mexico since December 2006 , when Mexican President Felipe Calderon announced plans to deploy troops in efforts to combat cartels . NEW : Authorities detail violence , turf battles between cartels . Someone threw a grenade and shot at them as they closed in , a military official says . Known as ` ` El Loco , '' authorities say Elizondo is a major cartel leader in Nuevo Leon state . Announcement of his capture comes a week after 49 bodies were found along a highway .
NEW : Authorities detail violence , turf battles between cartels . Someone threw a grenade and shot at them as they closed in , a military official says . Known as ` ` El Loco , '' authorities say Elizondo is a major cartel leader in Nuevo Leon state . Announcement of his capture comes a week after 49 bodies were found along a highway .