Some are calling it a bluff, saying LockBit doesn’t have the strength to pull off such a hesit.
https://www.techradar.com/pro/security/lockbit-hackers-claim-to-have-cracked-the-us-federal-reserve
https://www.techradar.com/pro/security/lockbit-hackers-claim-to-have-cracked-the-us-federal-reserve