Israeli archaeologists find traces of opium in 3,500-year-old pottery

Archaeologists say find supports theory that drug was used in burial rituals, possibly to enter ecstatic state'

Israeli archaeologists have discovered opium residue in 3,500-year-old pottery pieces, providing evidence to support the theory that the hallucinogenic drug was used in ancient burial rituals.

The joint investigation by the Israel Antiquities Authority and Weizmann Institute of Science began in 2012 when excavations in the central Israeli town of Yehud revealed a series of late bronze-age graves.