Kolkata: The CBI Tuesday arrested a leader of West Bengal's ruling Trinamool Congress and former director general of the state armed police Rajat Majumdar in connection with the multi-crore-rupee Saradha chit fund scam.

Majumdar, the first Trinamool leader to be arrested by the Central Bureau of Investigation (CBI) in the scandal, complained of chest pain soon after being taken into custody and was rushed to the state-run NRS Medical College and Hospital.