Telegram arrest: Who is Pavel Durov and what is his app?

The platform has faced criticism that disinformation can spread in these huge groups.

Critics have argued the platform has seen the sharing of conspiracist, neo-Nazi, paedophilic, or terror-related content.

Officials in France have reportedly said its investigation into Mr Durov is about the app’s failure to co-operate with law enforcement over drug trafficking, child sexual abuse and fraud.

In the UK, the app was scrutinised for hosting far-right channels that were instrumental in organising this month’s violent disorder in English cities and cybersecurity experts say its moderation of extremist and illegal content is significantly weaker than other social media companies and messenger apps.

Following Mr Durov’s arrest, Telegram said its moderation “is within industry standards and constantly improving”.

It said it abides by European Union laws, including the Digital Services Act, which aims to ensure a safe and accountable online environment.

“Almost a billion users globally use Telegram as means of communication and as a source of vital information,” the app’s statement read.

“We’re awaiting a prompt resolution of this situation. Telegram is with you all.”