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Leon Frederick Wallace, 37, was before a court for the third time for assaulting prison officers.
In 1994, Wallace was serving 13 years for a rape when he was convicted in the Supreme Court in Brisbane on a charge of attempting to murder a prison officer.
The court heard Wallace had told authorities he did not want a visit from a cultural affairs officer.
When the officer was talking through the cell door, Wallace became upset, kicked the door and spat.
Wadas has previous convictions on his record for child sex offences.
However, in the District Court in Brisbane today, Wallace pleaded guilty to the serious assault of a working correctional officer at the Wolston correctional centre, on May 25, 2009.
Records of that trial showed Wallace joined in an attack on an officer at the Sir David Longland jail, smashing an acoustic guitar and a heavier electric guitar over the officer's head before hurling a television set at him.
He was jailed for a further 10 years on the attempted murder charge, and then received another 18 months jail term when convicted of assault occasioning bodily harm of another prison officer at the Lotus Glen jail, in far north Queensland.
Ian William Walker, who is now 64, faced Bundaberg District Court yesterday and pleaded guilty to indecently treating a child under the age of 16 who was in his care.
Prosecutor Dzenita Balic said the girl's family had known Walker and his wife, who ran a child care service, for about four years.