11.   After unsuccessfully trying to hijack the bus, army helicopter gunships pursue the fugitives through the mountains of northern Pakistan.

12.   Albanian gunmen hijacked buses in two separate incidents in May and earlier this month.

13.   An Albanian immigrant armed with hand grenades hijacked a bus Wednesday in the second such hostages-for-ransom incident in less than two months in northern Greece.

14.   And the street chaos continued Monday afternoon in west Belfast, when two passenger buses were hijacked at gunpoint and burned as roadblocks.

15.   At least one armed man hijacked a bus Monday evening in Dagestan, a southern Russian republic neighboring Chechnya, and escaped after freeing all passengers, officials said.

16.   Hijacking buses is a long-standing tactic of outlawed Catholic and Protestant paramilitary groups.

17.   In Belfast, the city bus company cut off services Monday in west Belfast after having five buses hijacked by masked youths and burned as road barricades.

18.   In Belfast, a bus was hijacked and set alight by a man armed with a handgun and another vehicle was burned, police said.

19.   In late May, an Albanian armed with a hand grenade hijacked a bus with eight people on board and led it into Albania.

20.   In late May, another Albanian armed with a hand grenade hijacked a bus and forced it into Albania.