Vic crime stats agency's data black hole

Victoria doesn't know how many people on bail commit crimes because the state agency responsible for collating the numbers doesn't have access to the data.

In their publicly released statistics, the Crime Statistics Agency records breach of bail offences.

But the agency confirmed to AAP it does not have access to the Victoria Police data for all bailed people, meaning it cannot record the number of crimes those people commit.

Crimes committed by people on bail have been thrown into the spotlight since January's Bourke Street massacre.

Dimitrious Gargasoulas is accused of driving a car down the mall and killing six people while on bail.

Another man on bail, Chen Jie Xu, allegedly drove into three buildings on Swanston Street on Tuesday night.

"If there is any additional data they (the CSA) require from us, we will certainly do our best to provide this to them for future reports," a Victoria Police spokeswoman told AAP.

Police Minister Lisa Neville announced the latest CSA crime statistics on Thursday.

When asked about figures for offences committed on bail Ms Neville said she did not have the exact numbers.

"But what I can say is we have had more people on remand than we have ever before, so people are being remanded," she said.

Ms Neville pointed to reforms underway to reverse the onus on whether people should get bail for serious offences, including car jackings and home invasion.

Opposition police spokesman Edward O'Donohue said the agency should have the figures, given public concern over people committing crimes while on bail.

"It makes sense for them to have that information," he told AAP.

The CSA's latest figures show total offences have jumped four per cent in the 12 months to March 31 and the number of assaults, murders, robberies and rapes all rose.

However, family violence offences have stalled and drug dealing and trafficking dropped.

Ms Neville put a positive spin on the numbers, saying the state had "seen a significant turnaround in the last two quarters".

While for the first time in recent years the family violence incident rate started to stabilise, it remains a serious issue, representing one in six offences in Victoria, she said.

New offences of carjacking and home invasions were included in the statistics for the first time after becoming a separate category in December 2016.

"Over that four month period there were 20 carjackings and 25 attempted carjackings and 30 home invasions and three attempted home invasions," Ms Neville said.

Home invasion is defined as an aggravated burglary, but with a specific confrontation with someone in the home.