 A North Indian shopkeeper was killed in Bhandup, Mumbai after he refused to shut down his shop when MNS activists protesting Raj's arrest forced him to do so.Four persons were killed and another seriously injured in a village near Kalyan.Deputy commissioner of police (rural) Sanjay Shintre said two North Indians, a member of the Agri community and an MNS worker were killed in a clash between the two communities in Pisavali, 10 km from Kalyan.