Parklea prisoner Corey Chamberlain, 20, on the run Escapee ... Corey Chamberlain, 20 / Pic: Police Media Source: Supplied A PRISONER is on the run after escaping from Parklea Correctional Facility yesterday afternoon. Corey Chamberlain, 20, serving a four-year sentence for offences including break and enter, was reported missing from a secured perimeter section of the prison about 5pm. Quakers Hill Police launched an investigation and discovered the man was last seen inside the centre about 4pm. He is described as being of caucasian appearance, about 175cm tall, of medium build with brown hair and brown eyes. He has a tattoo of the word 'Aussie' on his lower right forearm and was last seen wearing a green top and pants. Police say he is known to frequent the Blacktown and Mount Druitt areas. Police have warned people not to approach Mr Chamberlain if they come into contact with him and to instead contact police.