Russian authorities arrested another senior Defense Ministry official on charges of bribery, authorities said Tuesday, days after President Vladimir Putin replaced the defense minister in a Cabinet shake-up and amid expectations of further purges at the ministry.

The Investigative Committee, Russia’s top law enforcement body, wrote in a statement that Lt. Gen. Yury Kuznetsov, the chief of the ministry’s main personnel directorate, was arrested on charges of bribery and placed in custody pending investigation and trial.