San Francisco, Nov 28 (TIWN) After a few users reported that they were not able to block accounts, Twitter CEO Elon Musk on Monday claimed that a "slight degradation of service" on the micro-blogging platform was caused due to an old "3rd party tool" which has now been fixed.

Musk tweeted: "Twitter experienced slight degradation of service today from an old 3rd party tool used to block accounts that had no rate limit (sigh)... Should be fixed now."