Congress leader Adhir Chowdhury has urged West Bengal Chief Minister Mamata Banerjee "to immediately sack" minister Partha Chatterjee, arrested by the Enforcement Directorate (ED) in connection with a school jobs scam in the state.

In a letter written to Banerjee, Chowdhury said irregularities in the recruitment process by the School Service Commission (SSC) is "an open secret."