Chronology
- 6 July 1953 born
- 3 October 1968 at age fifteen he stabbed his female neighbour and received eighteen months probation
- 25 July 1974 sentenced to 5 to 9 years imprisonment for rape aged 21
- 1979 approximately two months after his release from prison, Dupas again molested women in four separate attacks over a ten-day period.
- 28 February 1980 Dupas received a five-year minimum prison sentence for three charges of assault with intent to rape, malicious wounding, assault with intent to rob, and indecent assault.
- 1985 February released from prison
- 28 June 1985 Dupas was sentenced to twelve years imprisonment for rape that was committed four days after his release from prison.
- Less than two years after his release from prison, Dupas was arrested on charges of false imprisonment over an incident at Lake Eppalock during January 1994
- 18 August 1994 after entering a guilty plea to one count of false imprisonment, Dupas was sentenced to three years and nine months imprisonment, with a minimum period of two years and nine months.
- 1996 September Dupas released from prison
- 4 October 1997 The murdered body of Margaret Josephine Maher was discovered.
- 1 November 1997 Mersina Halvagis murdered. Body discovered the next day.
- 19 April 1999 The murdered body of Nicole Amanda Patterson was discovered.
- 22 April 1999 police arrested Dupas
- 22 August 2000 Sentenced to life imprisonment for the murder of Nicole Patterson with no minimum period.
- 16 August 2004 Dupas was convicted of the murder of Maher and sentenced to a second term of life imprisonment.
- 11 September 2006 police charged Dupas with the murder of Mersina Halvagis
- 9 August 2007 Dupas was convicted of the murder of Mersina Halvagis.
- 27 August 2007 Dupas sentenced to serve life imprisonment for the murder of Mersina Halvagis.
- 17 September 2009 Dupas' appeal upheld against conviction for the murder of Mersina Halvagis, verdict set aside.
- 25 October 2010 second trial for the murder of Mersina Halvagis begins.
- 19 November 2010 Dupas is convicted for a second time of the Halvagis murder.
- 26 November 2010 sentenced to life imprisonment for the murder of Mersina Halvagis, with no minimum term.
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