The OPP have yet to release any information about a criminal investigation into some government ministries. (Canadian Press)

The Ontario Provincial Police and the provincial cabinet both remain tight-lipped over a criminal investigation into dealings between government officials and private entities.

Last Thursday, provincial police raided the Macdonald Block, a tower on Bay Street in Toronto that houses 13 provincial ministries and the offices of several cabinet ministers.

"We don't really have any more information to share at this point because it is an active investigation and we're taking it one day at a time," provincial police Sgt. Pierre Chamberland told CBC News on Monday. He couldn't comment on media reports that the police are investigating staff at the Transportation Ministry or the Ontario Realty Corporation.

He also couldn't say when the OPP would be allowed to provide more information, despite suggestions by the force the previous day that more information could emerge Monday.

"We will be providing more information to the media and to the public whenever it does become available. We just don't know at this point when that's going to be," he said.

The OPP says the probe is looking into irregular financial transactions between government ministries and "outside vendors."

"These investigations are complex, and there [is] obviously a lot of information to go off of, so we want to make sure that we do it properly and we do it by the numbers, so that if it does wind up in the courts at some point in time, we want to make sure that we can present a clean investigation," said Chamberland.

Cabinet ministers also refused to comment Monday on the raids.

A spokesman for the cabinet office has said the raid involved a "few" ministries, but no one is willing to say on the record exactly what ministries are under investigation.

However, a senior government source has said the investigation did not involve elected officials or their political staff.

Ron McKerlie, deputy minister for the Ministry of Government Services, said in a Saturday release that staff are co-operating with the police.

The Macdonald Block includes several Ontario government ministries and offices, including Energy and Infrastructure, Education, Consumer Services, and the Ontario Realty Corporation, among others.

With files from The Canadian Press