Meanwhile, police investigators examined the boxes belonging to the Netanyahu and his wife, Sara Netanyahu, that are being stored by Amedi and his wife, Aliza Amedi, in Jerusalem.

They videotaped the contents and asked Amedi questions about them in the presence of his lawyer. Amedi, who threatened to sue the Netanyahus for $110,000 for his work, has insisted on holding on to the boxes as collateral.

Amedi, his wife and their daughter were questioned this week for just over seven hours by police investigators in separate rooms at the national fraud squad headquarters in Bat Yam. It was the fourth time Amedi has been questioned, and he reiterated that on several occasions his requests for payment had been ignored.

The couple's lawyer Yaron Rabinovitch said that investigators treated his clients fairly, but he protested over the discrimination against them.

"They are constantly questioned and then restricted in their movements, placed under house arrest, while other parties suspected of committing offenses that are no less serious are allowed to wander in the duty free and travel abroad," he said.

Rabinovitch was referring to reports the Netanyahus are planning an overseas trip and would not be questioned again until their return. They were both questioned extensively last week.

Ya'acov Weinroth, the lawyer who represents the Netanyahus, denies claims that he was behind the leaks that have surfaced during the investigation, as police Insp.-Gen. Yehuda Wilk hinted Tuesday at a meeting of the Knesset state control committee.

Moshe Leon, former director-general of the Prime Minister's Office, who is currently overseas, and Netanyahu's former personal secretary, Ruhama Avraham, will also be questioned.