MUMBAI, April 28 -- The Mumbai crime branch has invoked provisions of the stringent Maharashtra Control of Organised Crime Act (MCOCA) in the case relating to firing at actor Salman Khan residence in Bandra. The police have arrested four accused persons in the case, including two shooters and two persons who provided the weapons, while gangster Lawrence Bishnoi and his brother Anmol Bishnoi have been named as wanted accused in the case....