France's broadcasting regulator issued a warning Thursday (June 28th) to the French arm of Russian channel RT over a news report which dubbed over the voices of Syrian civilians with words they had not said, AFP reported.

France's Audiovisual Council (CSA) accused the state-backed channel of "failures of honesty, rigour of information and diversity of points of view".

The news report, aired on April 13th, "contested the reality of chemical weapons attacks in the Syrian region of Eastern Ghouta", the CSA said.

It noted that the testimony of a Syrian witness had been dubbed with a voice saying "words that bore no resemblance with what he had said".

The CSA added that another witness had been dubbed with a voiceover saying that local residents had been ordered by Jaish al-Islam to simulate the effects of a chemical attack, "but the testimony did not mention any particular group".

The CSA further said the report demonstrated "an imbalance in analysis" of the situation in Syria and that "on a subject this sensitive, the different points of view should have been expressed".

RT, considered to be a pro-Kremlin propaganda outlet, has already faced multiple warnings from Britain's media regulator Ofcom over reports on Syria.