He could be detained through Wednesday in connection with aprobeinto illegal activity on Telegram.
After that, he would have to be released or charged.
French President Emmanuel Macron has said that Durovs detainment isnot a political matter.
Telegram co-founder Pavel Durov in Jakarta, Indonesia on Aug. 1, 2017.Tatan Syuflana/AP
White supremacistsused Telegram to recruitduring a recent wave of U.K. riots stoked by anti-immigration sentiment.
Researchers at the Stanford Internet Observatory havearguedthat Telegram implicitly allows the trading of CSAM in private channels.
CSAM, terrorist content, and drug sales are all regulated by federal criminal law, she wrote.
Platforms have no immunity from that law.
She compared any potential attempt to hold Durov and Telegram liable to Ulbrichts case.
Darkness is descending fast on the formerly free world.
Musk sounded an ominous note as well, commenting Dangerous times on a tweet thatmentionedthe detainment.
Muskvowedto battle any fines or requirements to modify the X platform in court.