INAH has found a multiple burial of 13 individuals in Cholula dating
to 1150-1321 CE. A piece of jade, an engraved plaque with a human
face, both of the Mexcala style, serpentine, an alabaster plate and a
Teotihuacan style jadeite were also found. More material was found as
far down as the Pre-Classic period from 900-1 BCE.

INAH has the report here (in Spanish) with an excellent slide show of
the dig. (click on the red camera icon)
http://www.***.com/

A tiny URL;
http://www.***.com/

Mike Ruggeri's Mesoamerica after the fall of Teotihuacan
http://www.***.com/