PARIS — The Paris prosecutor’s office has launched an investigation into disinformation efforts targeting two prominent candidates in France’s upcoming presidential election, according to Agence France-Presse.

Edouard Philippe and Gabriel Attal, two former prime ministers who are high-profile contenders for the 2027 race, were reportedly the subject earlier this summer of fake news reports posted on social media aimed at undermining their campaigns.

Fabricated videos posted on X that used branding from leading French news platforms claimed Philippe, who suffers from alopecia, was diagnosed with a neurodegenerative disease, while fake reports on X and TikTok alleged Attal had Parkinson’s disease and was using drugs.

Attal denounced the reports as fake and filed a complaint. Philippe has refrained from publicly commenting on the posts, though his top allies have framed them as likely Russian interference.

Two networks that Western authorities say have links with Russia, Storm-1516 and Matriochka, were involved in the disinformation operations targeting Philippe and Attal, respectively, according to a French official with knowledge of the technical investigation led by Viginum, the French agency responsible for combating digital interference.

Storm-1516, which the French government says is tied to Russian military intelligence, was also involved in a similar disinformation operation targeting center-left MEP and likely presidential contender Raphaël Glucksmann. The prosecutor’s office announced the launch of a separate probe into that case earlier this month.

Viginum alerted the candidates and recommended that they not publicize these operations in order to avoid giving them visibility, according to the same official.