A Trinamool Congress (TMC) strongman, Arabul Islam was the Mamata Banerjee-led party’s face in Bhangar in West Bengal’s South 24 Parganas district for well over a decade. But, in a move that has surprised some, the Kolkata Police arrested the former MLA on Thursday in the murder case of an Indian Secular Front (ISF) worker registered eight months ago. While the ruling party claims that the arrest illustrates the impartiality of the police, belying the Opposition’s claims, the CPI(M) and the BJP have alleged it is a show the TMC is putting up before the Lok Sabha elections.