The lawyer for Telegram boss Pavel Durov said it was, "totally absurd to suggest that the head of a social network" such as his client could be involved in criminal acts, as the tech founder was granted bail in Paris but handed a travel ban.
"Telegram fully abides with European rules on digital. It is a moderator whose rules are similar to those of other social networks," David-Olivier Kaminski told several reporters.
A French judge put Durov under formal investigation on Wednesday in a probe into organised crime on the messaging app, but granted the entrepreneur bail on condition he pays five million euros (AED 20 million), reports twice a week to police and does not leave French territory.
Paris prosecutor Laure Beccuau said in a statement the judge found there were grounds to formally investigate Durov on all the charges for which he was arrested four days ago.
They include suspected complicity in running an online platform that allows illicit transactions, images of child sex abuse, drug trafficking and fraud, as well as the refusal to communicate information to authorities, money laundering and providing cryptographic services to criminals.
Durov's lawyer did not immediately respond to a Reuters request for comment.
A US immigration agent has shot and killed a 37-year-old woman in her car in Minneapolis on Wednesday during an immigration enforcement surge, according to local and federal officials, the latest violence in President Donald Trump's nationwide crackdown on migrants.
Israel's military said on Thursday it had carried out a targeted strike on a rocket launch site near Gaza City after identifying a failed launch, as questions mount over when the next phase of the Gaza ceasefire will begin.
Laurent Vinatier, a French researcher serving a three-year prison sentence in Russia for violating Moscow's foreign agent laws, has been freed as part of a prisoner exchange, French and Russian officials said on Thursday.
The US has seized two Venezuela-linked oil tankers in the Atlantic Ocean on Wednesday, one sailing under Russia's flag, as part of President Donald Trump's aggressive push to dictate oil flows in the Americas and force Venezuela's socialist government to become an ally.
Ukrainian officials were racing to restore power on Thursday after Russian strikes plunged two southeastern regions into near-total blackout overnight, forcing critical infrastructure to rely on reserves.