The five inmates allegedly targeted the other inmate because he had previously been a member of a rival gang, Alameda County Sheriffs Capt. Casey Nice said.
They (the suspects) all approached him at once and attacked him, Nice said. The victim was sliced with a jail-made weapon.
Nice did not name the attack victim, but said he was in custody on weapons charges.
The suspects are Ronnie Padilla and Ismael Gonzales Contreras, both of whom also face a charge of attempted murder; Epifanio Quintero, Jorge Valle and Francisco Garcia, face only assault charges. All three have previous assault convictions.
They were arraigned in Alameda County Superior Court last week and are scheduled to enter initial pleas today.
The attack occurred Oct. 3 inside a common area in one of the jails housing units. A common area is one shared by all inmates in the housing area when the inmates are not inside their cells.
It was a secure part of the jail, he said. The inmates were being watched at the time.
Nice did not say whether the housing unit was a low, medium or maximum security portion of the jail.
Nice said several jail officers were nearby and saw the attack, and put an end to it quickly. The victim initially was hospitalized but has returned to the jail, he said.
After an investigation, jail officers found out that the victim had been a member of a rival gang and did not report this when he was booked.
Padilla and Quintero, both 23, were in custody on separate assault charges. Contreras, 29, was being held on warrants. Information on Valle and Garcia was not available Monday.
Nice said it is not clear if the alleged attackers knew the victim or had simply found out about his gang affiliation.
Certain groups dont get along with each other, Nice said. Its safe to say this was a gang-related incident.
Roman Gokhman can be reached at (925) 416-4849 or at firstname.lastname@example.org.