Twitter did not provide an exact number of accounts that were shuttered or activated in the hours after the ownership announcement Monday. It said it was looking into the “recent fluctuations in follower counts.”

“While we continue to take action on accounts that violate our spam policy which can affect follower counts, these fluctuations appear to largely be a result of an increase in new account creation and deactivation,” Twitter said in a statement.

A spokesperson at Twitter who spoke on the condition of anonymity said the accounts that experienced the most severe drop-offs in followers were “high-profile accounts.”