Gopinath, who joined AAP in January this year, stressed that he was a great admirer of Anna Hazare and Kejriwal and continues to be so but disagreed with some of the decisions of of the AAP chief saying a head of a party cannot indulge in "shoot and scoot politics".
In a communication to AAP's Karnataka Convenor Prithvi Reddy, he said, "I would like to resign from the membership of the Aam Admi Party with immediate effect because of increasing differences with the party leadership and its ways."
When contacted, Gopinath confirmed the development over phone from Toulouse in France where the headquarters of aircraft manufacturing major, Airbus, is located.
He disagreed with Kejriwal on his refusal to furnish a bail bond in the defamation case filed against him by BJP leader Nitin Gadkari.
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Gopinath said it could not be compared to the stand taken by Hazare, who was sent to judicial custody in August 2011 following his arrest during Janlokpal Bill agitation after he refused to sign a personal bond.
In a blog titled 'Has Kejriwal lost his way' today, he criticised the functioning of AAP chief.
He said when Kejriwal took on Robert Vadra on corruption charges, "the BJP loved it and also went in for the kill against the Congress", adding that Kejriwal then took on Nitin Gadkari.