Los Jefes, or The Bosses, a criminal gang in Mexico, apparently dropped three iceboxes, each containing a severed head, near a government building in Chilpancingo, the capital of the western state of Guerrero.
The boxes came with a message warning to "traitors" and "blackmailers," presumably another gang that allegedly deals with extortion and carjacking.
Three dismembered bodies were also found close by inside big garbage bags.
The victims have yet to be identified by the police.
The motive behind the murders is also unknown.
Tragically, Guerrero is a state known for its drug-related gang violence.
One of the most high profile and disturbing cases to come out of state was the disappearance of 43 students in 2014.
The case showed the involvement of local authorities as well as the police with organized criminals. On Sept. 26, 2014, three busloads of students from the Ayotzinapa Normal School organized a peaceful sit-in in Iguala, protesting against educational reforms that could potentially raise fees and make it impossible for them to afford school.
However, matters took an ugly turn after the police — allegedly on the mayor’s orders — opened fire on the demonstrators, killing three students and three bystanders.
In the aftermath, 43 students disappeared. It was later revealed that they were killed and burned by the notorious Guerreros Unidos drug gang, whose members actually confessed that the Iguala police officers shot and later handed over dozens of students to them.