An alleged offender incident is an incident involving one or more offences where an individual, business or organisation has been recorded as an alleged offender. An alleged offender incident represents one alleged offender but may involve multiple victims and offences. One incident may involve offences that occur over a period of time but if processed by Victoria Police as one incident, it will have a count of one in the data presented in this section.
There may be multiple incidents within the reference period that involve the same individual, business or organisation as an offender, where this occurs they will be counted for each incident. If there are multiple alleged offenders related to a criminal event, each will have their alleged offender incident counted once in the figures.
Where there were multiple offences recorded within the one incident, the incident is assigned an offence category of the most serious offence in the incident, referred to as the principal offence.
Key movements in the number and rate of alleged offender incidents
Alleged offender incidents, 10 year trend
In the last 12 months there was a continued increase in the number of alleged offender incidents (2,096 incidents) and a 47.8% increase (56,192 incidents) from 117,492 alleged offender incidents recorded in the year ending September 2009. The number of alleged offender incidents are the highest in CSA data holdings, which go back to July 2004. The rate per 100,000 population decreased by 1.1% in the last 12 months, the lowest figure since the year ending September 2015.
Number of alleged offender incidents by principal offence category
In order to best represent the type of offence associated with an incident involving multiple offences, the most serious offence within the incident is determined and this becomes the principal offence to represent the incident.
The number of alleged offender incidents with a principal offence of Crimes against the person has increased in the past 5 years, up 18.1% (7,318 incidents). Crimes against the person increased 3.4% (1,559 incidents) in the last 12 months and made up 27.4% of all alleged offender incidents. This proportion has been increasing from 25.8% in the year ending September 2015.
By principal offence, the category that made up the largest proportion of alleged offender incidents was Property and deception offences (37.1% or 64,436 incidents), however this category decreased 1.8% (1,158 incidents) from the previous year.
Alleged offender incidents by principal offence, 5 year trend
Alleged offender incidents with a principal offence of Drug offences have increased 4.6% (637 incidents) in the past year, comprising 14,503 alleged offender incidents. This offence division made up 8.4% of all alleged offender incidents in the year ending September 2018.
Alleged offender incidents with a principal offence of Public order and security offences decreased by 1.9% to 20,237 incidents in the last 12 months.
In the past 12 months alleged offender incidents with a principal offence Justice procedures offences increased by 6.1% (1,533 incidents) to 26,466 incidents. Since the year ending September 2014 this category has increased 25.4% (5,369 incidents) up from 21,097 alleged offender incidents.
Sex and age of alleged offenders
Of the 173,684 alleged offender incidents recorded in the last 12 months, 173,668 incidents involved a person as the alleged offender. The remainder involved a business or organisation. Of the alleged offender incidents that involved a person, 79.1% involved a male offender and 20.8% involved a female offender. The remaining alleged offenders had an unknown sex.
Alleged offender incidents by sex and age, year ending September 2018
Overall alleged offender incidents involving a person increased in the year ending September 2018, up 1.2% (2,096 incidents). The number of male alleged offender incidents increased by 0.4% (550 incidents) from the previous year, while incidents involving a female alleged offender increased by 4.4% (1,530 incidents) from the previous year.
In the last 12 months alleged offenders aged between 10–19 years decreased 6.0% from 30,163 to 28,352 incidents. While male alleged offenders aged 10–19 years decreased 7.7%, from 23,290 to 22,087 in the last year, female alleged offenders aged 10–19 years increased by 0.4% from 6,243 to 6,265. For female alleged offenders in this age group the 10–14 year age group decreased by 8.9% or 153 incidents in the last 12 months while those aged 15–19 years increased 3.9% from 4,533 incidents.
There were two in five alleged offender incidents (39.5% or 68,669) recorded in the past 12 months resulted in an Arrest, while 45,487 (26.2%) resulted in a Summons and 36,230 (20.9%) in an Intent to Summons being recorded. There were 10,029 (5.8%) alleged offender incidents where a Caution or Official warning was issued.
An Intent to Summons is an interim investigation status and is not necessarily the final outcome of an incident. As the data is captured at a point in time, the investigation status of each incident is subject to change.
Alleged offender incidents by outcome, year ending September 2018
Other includes: Penalty infringement notice, not authorised, warrant issued, notice to appear, presentment and other statuses.
Key movements in the number of alleged offender incidents by Aboriginal or Torres Strait Islander status
Aboriginal or Torres Strait Islander status for alleged offender incidents are based on the most frequent recording of the Indigenous status for each offender. Under this counting rule, a person has either a yes or no response to the Standard Indigenous Question on their record, then the most frequent recorded response is taken as correct. If the person only has one meaningful response, then that response stands across all records. If a person appears in the dataset two different times with a ‘yes’ and a ‘no’ in the records, a ‘yes’ response is taken over a ‘no’ response. For more information on how this counting rule operates see the Explanatory Notes . There has been a decline in the quality of recording of Indigenous status, with the number of offender incidents with an Unknown Indigenous status increasing by 67.0% in the last five years. This decline in quality may impact on trend analysis.
Alleged offender incidents by Indigenous status, 5 year trend
Alleged offender incidents by Indigenous status and age, year ending September 2018
The age distribution for Aboriginal or Torres Strait Islander people varies in comparison to non-Indigenous people in Australia. On average, Aboriginal or Torres Strait Islander people tend to be younger than non-Indigenous people. For these statistics, the CSA has not controlled for these differing age populations.
 Excludes alleged offenders where their Indigenous status is unknown.
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