Party's chief spokesperson Randeep Surjewala compared Kejriwal with former Haryana chief minister Om Prakash Chautala, alleging Chautala would also threaten bureaucrats and it was a sign of disaster awaiting him.
"Vinash kale vipreet buddhi (destructive thinking in times of downfall)," he said, citing a Sanskrit proverb to attack Kejriwal.
He said both Prime Minister Narendra Modi and Kejriwal have similar traits as they believed in "concentrating all power".
"Threatening bureaucrats is not decorous. Power has gone to his head," he said.