The virus-infected trio stopped a number of times between south-western Sydney and Adelaide last week.

Detective Chief Inspector Mick Stoltenberg confirmed the removalists' movements between three states were being investigated by his Sydney colleagues.

CCTV footage obtained from the Jindera Shell service station would also be reviewed.

"They are subject of a criminal investigation by their local police in relation to why they broke the red zone bubble and why they decided to go travelling all around the countryside," he said.

"We are going to chase every rabbit down every hole.

"If it turns out that they get an infringement notice because they failed to comply in our area, they failed to wear a mask in our area (so be it).

"If it turns out they were up to something else we will chase up on that too."

Detective Chief Inspector Stoltenberg said police had established leads in their investigation and colleagues in Victoria and South Australia, where the removalists also travelled, could also lay charges.

"Things are obviously very early on," he said.

"I can only speak on behalf of NSW police, but if police in other states and territories decided to carry out their own investigations, my word, one in, all in.

"I base everything around the reasonable person test.

"For three people to be irresponsible such as this, we are not talking about reasonable people, we are talking about people who are negligent, ignorant and have done the wrong thing.

"We are not discounting anything being the case here.

"Why they were in our area we will find out."

Meanwhile, Victoria's COVID Commander Jerone Weimar said the "wheels of justice" would eventually catch up with the removalists.

He said he was over dealing with them and his focus had shifted to "picking up the pieces".