Four decapitated bodies were found hanging from a bridge and 16 additional corpses were discovered in a van amid ongoing cartel violence in the capital of Mexico's Sinaloa state.

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

A van containing 16 of the bodies was plastered with a banner referencing the ongoing wars between rival drug cartels in Sinaloa, authorities said.