Taking to his official account on social media platform X (formerly Twitter), Siddique said, "I joined the Indian National Congress party as a young teenager and it has been a significant journey lasting 48 years. Today I resign from the primary membership of the Indian National Congress Party with immediate effect."
Siddique did not specify any reason for his decision.
"There’s a lot I would have liked to express but as they say some things are better left unsaid. I thank everyone who has been a part of this journey," he said.
Siddique has so far not indicated which party he will join after quitting the Congress
His son Zishan Siddique is a Congress legislator from Vandre West Assembly Constituency in the city suburb.