The 59-year-old former Deputy Inspector General of Police sent his resignation letter on September 1 in which he expressed bitterness over the way the Modi government had failed to stand by him and other officers who implemented the state's "conscious policy" of "eliminating terrorism".
A 1987-batch IPS officer, Vanzara had said, "This government, through the dirty tactics of Amitbhai Shah, is unfortunately managing only for its own self so as to swim and continue to prosper in all directions, while ditching the police officers so as to sink and allow them to die unnatural death by drowning."
The CBI questioned him about the "tactics", as alleged by him in his resignation letter, used by Shah when he was the Minister of State for Home, agency sources said.
