CBI sources said the questioning of personal staff of the Chief Minister's Principal Secretary Rajendra Kumar by the agency was approved by Kejriwal himself as mentioned in a written correspondence from the Delhi Secretariat yesterday.
Rubbishing his claim that the officials were called for questioning over phone, CBI sources said all necessary formalities were done through correspondence.
The response came after Chief Minister took to Twitter to claim that his staff had been summoned "on phone without notice". He also claimed 150 officers have been summoned so far in this manner.

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