The practice of child sacrifice in Pre-Columbian cultures, in particular Mesoamerican and South American cultures, is well documented both in the archaeological records and in written sources. The exact ideologies behind child sacrifice in different pre-Columbian cultures are unknown but it is often thought to have been performed in order to placate certain gods.
Although there is no incontrovertible evidence of child sacrifice in the Olmec civilization, full skeletons of newborn or unborn infants, as well as dismembered femurs and skulls, have been found at the El Manatí sacrificial bog. These bones are associated with sacrificial offerings, particularly wooden busts. It is not known yet how the infants met their deaths.
Some researchers have also associated infant sacrifice with Olmec ritual art showing limp "were-jaguar" babies, most famously in La Venta's Altar 5 (to the right) or Las Limas figure. Definitive answers await further findings.
In 2005 a mass grave of one- to two-year-old sacrificed children was found in the Maya region of Comalcalco. The sacrifices were apparently performed for consecration purposes when building temples at the Comalcalco acropolis.
There are also skulls suggestive of child sacrifice dating to the Maya periods. Mayanists believe that, like the Aztecs, the Maya performed child sacrifice in specific circumstances. For example, infant sacrifice would occur to satisfy supernatural beings who would have eaten the souls of more powerful people. In the Classic period some Maya art that depict the extraction of children's hearts during the ascension to the throne of the new kings, or at the beginnings of the Maya calendar have been studied. In one of these cases, Stela 11 in Piedras Negras, Guatemala, a sacrificed boy can be seen. Other scenes of sacrificed boys are visible on painted jars.