Israeli TV has reported that the attorney-general has ordered a criminal probe into two unspecified cases involving Prime Minister Benjamin Netanyahu.
Attorney-General Avihai Mandelblit has asked police to question Netanyahu and the dates have been set for the interrogation, the Channel 10 report said.
Netanyahu's office did not make any immediate response to the media reports. The Justice Ministry spokeswoman said investigations in the matter "are still ongoing and this is neither confirmation or denial of what has been alleged", Reuters reported.
'We cannot comment on the report for obvious reasons, as the examination is still ongoing. This is neither a confirmation nor a denial of the claims made in the report,' the ministry said in a statment.
"The attorney-general, the police and prosecutors are working in close cooperation and a public announcement will be made in due course about the investigation," the spokeswoman said.
The local media said rumours of an impending investigation into suspect dealings and conflict of interest involving Netanyahu have been doing the rounds.
Netanyahu had earlier denied allegations that there were irregularities in the deal to buy submarines from Germany, after potential conflict of interest was cited involving his lawyer.
The Israel Defence Forces {IDF} had reportedly opposed the purchase of seven submarines from German conglomerate ThyssenKrupp. In a potential conflict of interest, David Shimron, Netanyahu's confidant, was appointed to the board of a company advising ThyssenKrupp, the Haaretz had reported.
Channel 10 news reported that Netanyahu was personally involved in pushing the 1.5 billion euro deal. Separately, there were also allegations that ThyssenKrupp bribed foreign government officials to secure contracts.
