Abu Nidal began to move his organization out of Syria to Libya in the summer of 1986 , arriving there in March 1987 . In June that year the Syrian government expelled him , in part because of the Hindawi affair and Pan Am Flight 73 hijacking . He repeatedly took credit during this period for operations in which he had no involvement , including the 1984 Brighton hotel bombing , 1985 Bradford City stadium fire , and 1986 assassination of Zafer al-Masri , the mayor of Nablus ( killed by the PFLP , according to Seale ) . By publishing a congratulatory note in the ANO 's magazine , he also implied that he had been behind the 1986 Space Shuttle Challenger disaster , writes Seale
Bradford City stadium fire
Bradford City stadium fire
Abu Nidal