A narco tank, also called rhino trucks or monstruos (Spanish for 'monster'), is a type of improvised fighting vehicle used by drug cartels.
Mexican authorities have seized about twenty such armored trucks in the state of Tamaulipas alone, four of which were later destroyed.
[3] On May 25, that same year, One narco tank was destroyed in a clash between the Sinaloa cartel and the Los Zetas known as the Battle of Ruíz.
[8] In 2015, Mexican authorities found a narco tank factory in Nuevo Laredo, Tamaulipas that had eight vehicles in it, which were in the process of having armor plates with firing ports added to them.
[9] Some narco tanks are equipped with improvised battering rams on the front to break through roadblocks.