GUWAHATI, April 9 – A 48-hour curfew has been clamped in the entire North-Cachar Hills district from 1 pm today in view of the deteriorating law and order situation in the district. Earlier curfew was clamped in the district from 6 pm yesterday to 5 am today. But the administration again clamped curfew following arson in Retzol area today. The release said that all out efforts are being made by the district administration to bring the situation under control and all educational institutions in the district have been closed down, official sources said.