The prison governor in charge of Silverwater women's jail has been charged with assault after allegedly choking an inmate in her care.
Detectives began investigating after a referral from the Silverwater Correctional Complex about the alleged assault of the female prisoner.
Tracey Mannix, 55, was arrested at her home in Mascot on Tuesday and charged with common assault and choking a person without consent.
She was granted conditional bail to appear at the Downing Centre Local Court on July 26.
The 55-year-old, who has run the Silverwater women's prison since March, has been suspended from work.