It's redacted but it's clear they subpoenaed the chans hosting and protecting Q. They were unable to gain any leads or any evidence on who Q Is. PBS/HBO NARRATIVE SHILLS BTFO.
Declassified FBI documents: https://vault.fbi.gov/qanon/qanon-part-01/view 4chan post: https://boards.4chan.org/pol/thread/428301127
Wow, not much of an investigative agency if they couldn't figure out that "QAnon" doesn't exist. Unbelievable! 🙄