Police are now looking into two other matters related to Netanyahu, Channel 10 television reported on Monday night.

One of the matters appears to involve a deal for Israel to purchase German submarines, while the second affair remained unclear, according to the reports.

It was unclear whether the new probes were preliminary enquiries or if they had been elevated to fully fledged investigations.

Police declined to comment when contacted by AFP.

Netanyahu's cousin, family lawyer and confidant David Shimron has reportedly been involved in the deal to purchase Dolphin submarines from Germany's ThyssenKrupp.

Media reports have alleged a conflict of interest over the role played by Shimron, who has also represented ThyssenKrupp's Israeli agent.

If confirmed, the reports would add to a list of legal troubles already facing Netanyahu.