Probe into Sydney's Parklea jail to begin

A parliamentary inquiry into Sydney's Parklea Correctional Centre will hold its first public hearing after widespread allegations of corruption and contraband trafficking.

An upper house committee will probe the adequacy of staffing, issues around contraband and the general security of the privately-managed prison.

Parklea was privatised in 2009 and was last year the target of a series of contraband stings, including an 11-week crackdown launched in August.

The chair of the inquiry, Shooters, Fishers and Farmers MP Robert Borsak, said it will examine the current operation of the prison by GEO Group, with the first session taking place on Friday afternoon.

"The hearing will provide the opportunity to take evidence from both GEO Group and Corrective Services NSW," Mr Borsak said in a statement.

The 11-week crackdown was prompted by a video published online in July 2017, showing an inmate at Parklea jail boasting about having a blade, the drug ice and a mobile phone.

The inmate, Carl Walton, at the time described the security arrangements at the facility as "a dead-set joke" and alleged guards were involved in the mobile phone smuggling.

In a more recent scandal, a 40-year-old female guard was sacked after being nabbed at the prison in December and charged for allegedly supplying tobacco to an inmate in exchange for cash.