PARIS (Reuters) - French senators urged an investigation into three top aides to President Emmanuel Macron on Wednesday, saying there was reason to believe they had withheld information from an official inquiry into a scandal involving Macron’s former bodyguard.

FILE PHOTO: Senior Elysee senior security officer Alexandre Benalla (L) stands next to French President Emmanuel Macron during a visit to the Paris International Agricultural Show, February 24, 2018. REUTERS/Stephane Mahe/Pool/File Photo

Delivering a scathing report after the seven-month inquiry into the so-called Benalla Affair, named for former security aide Alexandre Benalla who was caught on film beating a protester on May 1 last year, the senators said they had uncovered a number of questionable practices.

As well as doubts about the testimony of senior aides, the senate’s investigative committee said it had reason to believe Benalla may have lied to them under oath, and it called for prosecutors to investigate both charges.

“What happened on May Day now appears to be the tip of the iceberg,” Philippe Bas, a senator from the opposition center-right Les Republicains party and head of the investigative committee, told reporters.

In response, French government spokesman Benjamin Griveaux said Macron’s office would in due course reply to the “many untrue elements” in the Senate’s findings.

Later a presidential palace official said that the Elysee would not react to the content of the report out of “respect for the separation of powers”.

MACRON ON DEFENSIVE

Over recent months the Senate investigation has revealed how Benalla, who was fired from his job, was able to continue traveling on a diplomatic passport.

The committee’s findings bring the mishandling of the Benalla affair closer to Macron, who took office in 2017 promising to raise ethical standards in public life.

Macron’s defiant reaction to the scandal prompted a slump in his popularity ratings in the summer, from which he is only now showing signs of recovering as he seeks to quell a popular rebellion over inequality and his policies.

The committee concluded that Alexis Kohler, Macron’s most senior aide, and his chief of staff, Patrick Strzoda, had both withheld details in their testimonies, notably about the remit of Benalla’s role as security adviser.

The committee said Benalla also appeared to have misled senators over his alleged link to a contract between Russian billionaire Iskander Makhmudov and a French security firm, which was revealed by investigative website Mediapart.

A lawyer for Benalla did not immediately reply to a request for comment.

There was evidence, the senators said, that Macron’s security and France’s national interests had been put at risk.

“There is no doubt that the indirect relationship between a Russian oligarch and a close aide of the president, who is directly involved in the presidency’s security ... would compromise the head of state’s security and, further still, the nation’s interests,” the report read.

The committee recommended that Benalla, who was found to have eight passports, four of them personal and four of them either issued for work or on diplomatic grounds, be prosecuted for perjury during the investigation.

It also recommended that the upper house notify prosecutors of the evasive answers it received from Macron’s aides.

Senate president Gerard Larcher has already indicated he will follow through on the recommendations and file the necessary complaints with the prosecutor’s office.

Lying to parliament under oath is punishable by up to five years in prison and a 75,000 euro ($85,000) fine in France.