Most experts agree that blood and human sacrifices originated the Olmecs (a pre-Columbian Mesoamerican group) lived 3,000 years ago, and were transmitted to the Maya.
The heart, and else related to blood, was the central element in sacrifice.
Sacrifice could have been performed for communal integration, , there may have been a divergence between different social groups on the manner in which these sacrifices were performed.
Capturing prisoners after a successful battle was one way to provide victims for sacrifice, presumably to placate deity had promised victory.
But Mayan enemies were not the only ones used for these rituals. In 2005 a mass grave of sacrificed children was found in the Maya region of Comalcalco. killed these children intended to use them as sacrifices.
Sacrifices were also performed for dedicatory purposes temples were built at the Comalcalco acropolis.