21.   The blast occurred amid a new wave of fighting in Dagestan.

22.   The blast occurred because workers did not complete all parts of a required safety procedure that would have prevented release of the pressurized nitrogen, OSHA said.

23.   The blast occurred just one block from the headquarters of the fire and police departments, and Murray said authorities were immediately on the scene to help victims.

24.   The blast occurred near the village of Oraovica, and was the second such attack in two weeks, said Biserka Matic, a Serbian government official.

25.   The blast occurred south of the town of Hebron, near the Arab village of Bani Naim.

26.   The blast occurred at a demolition range next to the compound that once housed former Taliban leader Mullah Mohammed Omar, according to the Associated Press.

27.   The area had been fenced off to the public since the initial blast occurred.

28.   The blast occurred as he approached a taxi stand, apparently to catch a ride to a target in Israel.

29.   The blast occurred near the Savin Hill area of Dorchester.

30.   The blasts occurred near the town of Diphu in Assam.