Riverina Police District Commander Superintendent Bob Noble gave an update on Thursday on investigations into the party on July 28 that allegedly involved up to 40 people at CSU's Wagga campus student accommodation.

"Police from the Riverina Licencing Enforcement Unit have continued interviewing students and others from the university and another seven persons were issued with infringement notices in the last 24 hours in respect for that," he said.

"We are not finished yet; [the new fines] brings the total to 13 people who have received fines at this point in relation to that incident and this matter continues.

"We have worked closely with the university and student body and NSW Health on that; it's regrettable, it shouldn't have happened and at a time when we are seeing other regional areas encroaching towards this one are locking down, we should be exercising a bit more discipline."

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The latest infringement notices for the CSU party were for $1000 each.

Superintendent Noble said police and the NSW government were serious about enforcing the emergency health orders.

"There were also another couple of infringement notices issued in Wagga [on Wednesday] in a large shopping centre in relation to staff at shops not wearing masks," Superintendent Noble said.

"Two staff at two separate businesses premises were issued fines in respect to that office and you will continue to see police patrolling those areas today and into the future.

"We also have police patrolling those areas and others in plain clothes to detect people doing the wrong thing."

Superintendent Noble said police were taking on these duties to protect older people and those with pre-existing health issues in the community who could easily die if there was an outbreak in the region.

"In a case where there are signs of a reasonable excuse or mitigating circumstances, police will consider issuing a warning but when people are just clearly not caring about the health orders, they will probably get a fine," Superintendent Noble said.

"Yes, it's regrettable but it's going to have to happen."

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