Filber, the former director of the Communications Ministry under Netanyahu, is under arrest on suspicion of promoting regulation worth hundreds of millions of dollars to Israel's Bezeq telecom company. In return, Bezeq's popular news site, Walla, allegedly provided favorable coverage of Netanyahu and his family.
The reports came shortly after another bombshell allegation that a different Netanyahu confidant attempted to bribe a judge in exchange for dropping a corruption case against Netanyahu's wife. Nir Hefetz, a longtime media adviser to Netanyahu and his family, remains in custody.
The prime minister, who held the communications portfolio until last year, has not yet been named a suspect, though he may soon be questioned. Netanyahu has denied all the charges, calling them part of a media-orchestrated witch hunt that has swept up the police and prosecution as well, and has vowed to carry on.
Still, the string of accusations appears to be taking its toll.
Senior Cabinet ministers from Netanyahu's ruling Likud party, who until just recently have marched out dutifully to defend him, have largely gone silent. Netanyahu himself appeared ashen in a video released late Tuesday calling the claims "total madness."