More questions are being posed about why Metgasco's licence to drill at Bentley was suspended just days before work was due to begin.

The State Government announced the decision earlier this month, citing inadequate community consultation.

Metgasco has since sent a detailed submission to the Office of Coal Seam Gas, looking to have the decision reversed.

Greens' MP Jeremy Buckingham says the government acted less than a week before hundreds of police were expected to confront thousands of protesters at the site.

He says police warned that people could be seriously hurt or even die if there was a major conflict.

"That was what the police assessment of breaking the blockade meant," he said.

"If they were to bring in hundreds of police, riot quad, horses, there was even talk of water cannons and the like, you had a lot of people in close proximity to heavy machinery on a roadway, casualties were foreseeable.

"This is a source very close to the former police minister's office, very close to the government and someone who would be in the know.

"I'm not prepared to reveal that source but I'm confident that it reflects the briefing that was probably received and reflects the situation."

A spokeswoman from the office of Police Minister Stuart Ayres is refuting the claims, but says the minister will not be talking about them.