An inmate found unresponsive in a holding cell in the Mendocino County Jail has died at a Ukiah hospital. Late Tuesday night during a routine check, a deputy became concerned about one of two men in a holding cell. Deputies entered the cell and found the man to be unresponsive, not breathing but still with a pulse. Medical personnel began lifesaving measures until first responders from the Ukiah Valley Fire Authority arrived and took over. The man was taken to the ER where lifesaving measures continued but he was pronounced dead at 12:14 am on Wednesday. An autopsy has been done and the medical examiner is awaiting a toxicology analysis..