The Alameda County Sheriff’s Office is investigating the death of a 27-year-old man who was found hanged in an Oakland courthouse holding cell last month after being left alone by deputies for nearly an hour, according to a source familiar with the matter.
Three sheriff’s supervisors at Wiley W. Manuel Courthouse were placed on administrative leave in connection with the Dec. 17 in-custody death, according to the source, who was not authorized to speak publicly about the investigation and was granted anonymity in accordance with Chronicle policies.
The county coroner this week confirmed that Enrique Gonzalez-Cruz hanged himself in what was ruled a suicide…