Police allege the 78-year-old sexually abused 29 children connected to the now closed Magill training centre between 1978 and 2003

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A man who had access to children in South Australia’s youth detention centre has been charged with historical sexual abuse offences dating back to 1978.

The 78-year-old from Adelaide’s western suburbs was charged with 55 offences including multiple counts of rape, unlawful sexual intercourse, sexual abuse of a child, gross indecency and indecent assault. Police say the charges relate to 29 known victim-survivors, many of whom were children at the time of the alleged offending.