The grim reality of Mexico's escalating cartel violence was underscored on Monday as four decapitated bodies were found hanging from a bridge in Culiacan, the capital of Sinaloa state. This horrific discovery comes amidst a surge of bloodshed that has claimed nearly 20 lives in less than 24 hours, according to authorities.

Violence has soared in Sinaloa since the capture in the U.S. of cartel co-founder Ismael "El Mayo" Zambada almost a year ago.

Four decapitated bodies have been found hanging from a bridge in Mexico's Sinaloa state, part of a surge of violence that claimed the lives of 20 people in less than a day