31.   The sectarian violence intensified after four leaders of the Sipah-i-Sahaba were killed in Islamabad earlier this month allegedly by Shiite militants.

32.   The violence has intensified ahead of elections scheduled for March.

33.   The violence intensified after dark.

34.   The violence has intensified international pressure on the government to establish talks with the opposition.

35.   But his support began to slip early this year as negotiations with the rebels fell apart and violence intensified.

36.   But the overture failed to bear fruit, and the violence has since intensified.

37.   But while attacks have been reduced in cities, violence has intensified during recent weeks in Algerian villages, notably in the Mitidja plain and the mountains.

38.   Violence has been intensifying in recent weeks ahead of general elections scheduled for June.

39.   Violence intensified with the launch of fresh military operations in May last year.

40.   Violence has intensified since the announcement by pro-Russian authorities in the republic of elections on Sunday to elect a new Chechen president.