My source is a whole bunch of comments on Mastodon that I read as the whole thing was going down, plus a bunch of more comments on Twitter talking about what happened after it was all over. I don't have specific links as I didn't save any, but there were a lot of independent sources on this at the time.

Edit: found a new tweet that summarizes this: https://twitter.com/eiwbm_cat/status/1035716245914624003?s=2...