<br/>Situation remained tense today in several areas of the old Hyderabad city where curfew was clamped following incidents of communal violence on Saturday. South Zone DCP Madhusudhan Reddy said, curfew imposed on Monday evening, has been extended till 6 pm today. <br/><br/>Due to curfew, 10th class examinations in 140 centres in South Zone area have been postponed. The Centre has rushed 1,800 paramilitary personnel to restore peace in the sensitive areas. The entire force has been put on alert to maintain law and order in view of Hanuman Jayanti celebrations today. <br/><br/>Fresh violence erupted yesterday in Moghalpura, Shalibanda, Charminar, Aliabad, Falaknuma, Shamsheergunj and Lal Darwaja localities after a group of miscreants pelted stones at passersby which increased tension. One person was stabbed to death yesterday and another hurt in the Shalibanda area. <br/><br/>Another person was injured when a vehicle was attacked at Khilwat Chowrasta. About 130 persons, suspected to be involved in the communal clashes, have been taken into custody so far.