A detention officer at the Bexar County Jail suffered a stab wound to his leg at the hands of an inmate, according to a spokesman with the Bexar County Sheriff's Office.
Chief Public Information Officer Paul Berry said the attack happened around 3:30 a.m. Friday in the Administrative Segregation unit of the jail.
The officer, identified as David Martinez, a 9-year veteran with the Bexar County Sheriff's Office, was stabbed at least once in the leg "with some sort of sharp object" following a confrontation and subsequent altercation with the inmate, identified as Juan Antonio Vigil, Berry said.
Other detention officers, including members of the Special Emergency Response Team (SERT), were called to diffuse the situation.
The officer, who works in the jail's special management unit, was taken to University Hospital for treatment. He was released Friday morning, Berry said.
Vigil was also injured and taken to University Hospital for treatment, but the nature of his injuries was not known Friday morning. Berry did say they did not appear to be life-threatening.
Berry said other detention officers received minor injuries which did not require a trip to the hospital.
Vigil was originally booked into the Bexar County Jail on May 12, 2013, on charges of assaulting a public servant and robbery. His court date is currently set for June 27, 2013.
Since then, Berry said, he has been involved in at least eight incidents of fighting with other inmates or detention officers, including the incident Friday morning.
Berry said detectives are still investigating the incident but that Vigil will be charged with aggravated assault with a deadly weapon against a public servant in connection with the Friday morning incident.