Telegram said in a previous statement posted on Musk's social media platform X that it abides by EU laws, and that Durov has "nothing to hide."
The Russian-born billionaire left Russia in 2014, according to Telegram's website, and is also a citizen of the United Arab Emirates.
In March, Musk announced xAI merged with X in a deal that values the AI company at $80 billion and the social media company at $33 billion. The company's Grok chatbot was under fire earlier this month after it began responding to user queries with unrelated comments about the controversial topic of "white genocide" in South Africa.