Since 6 p.m. Tuesday, the Mississippi State Penitentiary at Parchman has been on lockdown, and the Delta facility will remain that way for more than 48 hours as prison staff prepares for back-to-back executions, something the state hasn't done since 1961. Orlansky said a neuropsychiatrist on Friday diagnosed Holland with a brain injury caused by oxygen deprivation, stemming from an incident when he was a teenager, prior to his crime.