Telegram has released user data to German Feds in multiple cases
Did anyone expect otherwise? Telegram is a mostly unencrypted chat application, of course it's going to cooperate if local law enforcement comes knocking on their door with a warrant. If you don't want your chats to end up in the hands of law enforcement then you should consider using an end-to-end-encrypted messenger application.Signal will hand over your data too if the police show up, but they don't have any data to hand over.