Victoria Police is continuing urgent efforts to swear-in more than 1000 officers due to an administrative stuff-up.
It was revealed on Thursday that some officers have been making arrests, pressing charges and issuing orders without valid powers to do so.
This was due to legislative amendments passed in 2013, which meant acting assistant commissioners without the appropriate powers have been swearing in graduating police officers.
The mistake has led to the wrongful swearing in of 1076 police officers, 157 protective service officers and 29 police custody officers, over eight years.
Victoria Police said three assistant commissioners were swearing in about 660 officers and PSOs via videolink until about 11pm on Thursday.
About another 570 individuals remain to be sworn-in again, with officers taking their oath during their first shift back at work and beginning their duties immediately afterwards.
It is not clear how many court cases may have been affected by the bungle, but the state government has promised to introduce legislation to fix the problem at parliament's next sitting week, which begins on March 8.
Chief Commissioner Shane Patton said on Thursday it was a "case by case analysis" as to whether people could contest arrests or charges by unsworn police officers.
In a statement, Victoria Police said most officers should be sworn-in by the weekend.
