The Bijapur police in Chhattisgarh on Tuesday filed an over 1,200-page chargesheet in the court against four persons accused in journalist Mukesh Chandrakar's murder. Mukesh was killed for exposing poor road construction work done by contractor Suresh Chandrakar, according to police. "Suresh called Mukesh multiple times before the murder. He was worried that his empire would crumble," it added.