A senior Victoria Police member has admitted the force needs to do better when it investigates itself.

A parliamentary inquiry has heard Victoria Police is often responsible for investigations into its own officers’ alleged misconduct, creating a clear conflict of interest.

Experts have called for a new independent body to take investigations out of their hands.

At the final day of hearings this week, Assistant Commissioner Luke Cornelius said he welcomed extra scrutiny.

I'm not questioning the need for an independent body or effective oversight," Assistant Commissioner Cornelius said.

"But the point I'm making is a lot more thought needs to be given to how do we approach culture change?

“How do we do that in a way where police actually identify and recognise the need for change and commit to it?

“That's not going to be serviced by a bunch of carpetbagger lawyers swooping in on our organisation and giving us 101 on … what the United Nations reckons human rights looks like.

“It actually is much more effective, in terms of driving change, for police to own that need to change.”

In 2016, only 9 per cent of complaints against police officers were substantiated.

That figure is substantially lower than in jurisdictions that have an independent oversight body.

But Assistant Commissioner Cornelius says Victoria Police has improved its internal reporting culture, and is concerned that an external body could damage that progress.

“Once again the shutters would go up,” Assistant Commissioner Cornelius said.

He did, however, acknowledge the need for more transparency in response to claims that those who make allegations are often given only limited updates and brief statements.

“We recognise there is a very clear need to be a lot more transparent and fulsome in how we explain our outcomes and decisions,” he said.

“Our overreliance on form letters, which are very anodyne in their content, we really have to move beyond that and engage at a human level with the individual who has been harmed or concerned by our behaviour.

“We owe it to them, it's a very basic level of customer service.”