Dozens of Egypt's journalists have endorsed a campaign demanding legal action be taken by the Journalists Syndicate against TV host Ahmed Moussa after he aired obscene photos allegedly of newly-elected MP  and renowned Egyptian director Khaled Youssef.

Around 150 journalists signed a complaint letter accusing Moussa of misusing his media channel to "insult people and invade their personal lives," demanding he be questioned and banned from appearing on the screens.

A Journalists Syndicate official said that the union board will decide on Saturday if Moussa will be summoned for investigations.

"The board has to decide whether he will be referred to investigations," undersecretary Gamal Abdel Rehim told Ahram Online on Thursday.

"Sanctions vary from a warning, a fine, a ban from exercising the profession and dropping the syndicate's membership," Abdel Rehim said, highlighting that the latter is the most severe.

Moussa showed viewers earlier this week "scandalous photos" that he alleged belong to newly-elected MP and Egyptian director Khaled Youssef. The blurred-out photos purported to show a naked woman with a man. One of the photos is a close-up of what appeared to be Youssef's face.

While acknowledging he cannot verify the authenticity of the photos, Moussa urged Youssef to defend himself in his capacity as an MP and tell the public if the photos are fabricated.

The incident came against the backdrop of a case brought against Youssef accusing him of sexually harassing a woman.

Youssef, famous for playing a major role in the 2011 uprising, said during TV comments the photos are 100% fabricated and added that he will prove the matter before prosecutors.

"The surfacing of the two issues at the same time asserts there is a deliberate intention to defame me," he said.

The broadcasting of the photo has drawn a barrage of criticism even from fellow media personnel.

TV host and writer Khaled Salah slammed Moussa's move as "decadent" and a "shame on media," later promoting an angry exchange of criticism between the two presenters on air.

Moussa is known to be a staunch opponent of the January 25 revolution that toppled autocrat Hosni Mubarak after three decades of rule. He has repeatedly launched verbal attacks on activists associated with the 2011 uprising. He has received several prison terms over charges of insulting public figures. He has never been to jail though.

Moussa is a strong supporter of the government and administration of President Abdel-Fattah El-Sisi.