Accused confesses to attacking his long-time employee; was found sitting beside Mina Halder’s body when police reached his house; motive behind killing yet to be ascertained, say police; FIR registered on a complaint filed by a neighbour Accused confesses to attacking his long-time employee; was found sitting beside Mina Halder’s body when police reached his house; motive behind killing yet to be ascertained, say police; FIR registered on a complaint filed by a neighbour