 849), along with Calakmul, Tikal and Seibal itself.It has been suggested that Itza Maya from Motul de San José began the northward migration of Maya peoples to the Yucatán Peninsula at the end of the Classic Period.Classic period stelae at the site refer to the "King of the Itzá", demonstrating that the Itza were already in the Petén region at this time.