Here's information provided by the Alameda County Sheriff's Office:
On Saturday, September 1, 2012, deputies responded to a cell in Santa Rita Jail where inmate Dennis Jimenez, aged 54, was attempting to hang himself.
Deputies entered the cell where Jimenez was the only occupant and cut him from a homemade noose fashioned from a bed sheet. The sheet was attached to the upper bunk of the cell, and Jimenez used his own body weight to cut off the blood flow to his brain.
Santa Rita staff began lifesaving measures at the jail and Jimenez was transported by ambulance to Valley Care Hospital in Pleasanton where he was pronounced dead.
Jimenez had been in custody at Santa Rita Jail since March 11, 2012 when he was arrested by the Oakland Police Department for DUI, theft and drug charges.
Jimenez was released on the DUI and theft charges, but remained in jail to serve his sentence on the drug charge. He was due to be released on September 5, 2012.
Per protocol, Sheriff’s detectives from the Eden Township Substation arrived to investigate the scene, as well as Coroner’s Investigators.