The lead masks case (Portuguese: mistério das máscaras de chumbo, lit. "mystery of the lead masks") involves a series of events which led to the death of two Brazilian electronics technicians, Manoel Pereira da Cruz and Miguel José Viana, who had last been seen by their families on August 17, 1966.[1] Their bodies were discovered on August 20, 1966, and the cause of their deaths has never been determined.
- ^ admin (2015-10-24). "1966, August 17: The Lead Masks Mystery". Anomalies: the Strange & Unexplained. Retrieved 2019-05-30.