Mexican authorities are blaming a drug cartel following the discovery of 116 bodies in mass graves in northern Mexico, not far from the U.S. border.
Attorney General Marisela Morales said the Zetas drug gang, which is known for its extreme violence, is suspected of being behind the killings as part of operations to control drug transit routes to the U.S. in Tamaulipas state.
Officials say 17 suspects have been detained in connection with the killings.
Last year in Tamaulipas, the bodies of 72 dead migrants were found, reportedly massacred by suspected drug cartel gumen.
More than 35,000 people have been reported killed in Mexico since 2006, when authorities launched a military crackdown on the country's drug gangs.
compiled from agency reports