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.
Spain and Portugal switched their power back on after the worst blackout in their history, though authorities offered little explanation for what had caused it or how they would prevent it from happening again.
In the chaotic first 100 days since President Donald Trump returned to office, he has waged an often unpredictable campaign that has upended parts of the rules-based world order that Washington helped build from the ashes of World War II.
Canadian Prime Minister Mark Carney's Liberals retained power in the country's election on Monday, but fell short of the majority government he had wanted to help him negotiate tariffs with US President Donald Trump.
A huge power outage hit large parts of Spain and Portugal on Monday, paralysing traffic, grounding flights, trapping people in elevators and leaving power operators scrambling to restore power to millions of homes and businesses.
Russian President Vladimir Putin on Monday declared a three-day ceasefire in the war with Ukraine next month to mark the 80th anniversary of the victory of the Soviet Union and its allies in World War II.
Canadian prosecutors have charged a 30-year-old Vancouver resident with murder for killing at least 11 people and injuring dozens after he rammed an SUV through a crowd at a Filipino community festival in the western Canadian city.