Mexican officials stated Statement that 49 people were decapitated Killing and mutilated Bodily_harm by members of Los Zetas drug Committing_crime cartel and dumped by a roadside near the city of Monterrey in northern Mexico .

The authorities have blamed Judgment_communication much of the violence Violence on Los Zetas – a cartel originally set up by ex-commandos that deserted Escaping the Mexican Army in the 1990s – and the Sinaloa Cartel , an organization originally headed by Joaquín Guzmán Loera ( a.k.a .

The 2011 San Fernando massacre Killing , also known as the second massacre Killing of San Fernando , was the mass murder Killing of 193 people by Los Zetas drug cartel at La Joya ranch in the municipality of San Fernando , Tamaulipas , Mexico in March 2011 .

In the blood sport , the survivor was recruited Becoming_a_member as a hitman for Los Zetas ; those who did not survive were buried Placing in a clandestine gravesite .

Mexican authorities are not certain why Los Zetas decided Deciding to abduct Kidnapping people from buses , and then torture Bodily_harm , murder Killing and bury Placing them .

They speculate Coming_to_believe that the Zetas may have forcibly recruited Becoming_a_member the passengers as foot soldiers for the organization , intending to hold Hold them for ransom Surrendering or extort Kidnapping them before they crossed Motion_directional into the US .

One of the leaders confessed Reveal_secret that Heriberto Lazcano , the supreme leader of Los Zetas , had ordered Request the investigation Criminal_investigation of all buses coming in through San Fernando ; those `` who had nothing to do with it were freed Releasing .

On August 25 , 2011 , members of Los Zetas set Destroying a casino on fire in Monterrey , Nuevo León , Mexico , killing Killing 52 people .

The fight Hostile_encounter was between Los Zetas and the Gulf Cartel , two drug cartels that operate Being_in_operation in northeastern Mexico .

One of the fugitives , Óscar Manuel Bernal alias `` La Araña '' ( The Spider ) , is considered by the Mexican authorities to be `` extremely dangerous , '' and is believed Know to be the leader of Los Zetas in the municipality of Monterrey .

It was later confirmed Check that the riot Violence and brawl Hostile_encounter `` served as cover for a massive jailbreak '' for the members of the Zetas drug cartel , who attacked Attack the Gulf Cartel inmates .

After the split of the Gulf Cartel and Los Zetas in early 2010 , both groups have been battling Hostile_encounter for Monterrey and other areas in northeastern Mexico .