31.   Officials have not blamed the explosions on any group.

32.   Officials quickly blamed the explosion on Chechens, who are fighting a guerrilla war against Russia, but provided little evidence.

33.   Parliament rebuked the Russian government Friday for blaming the explosion of crime largely on Moscow, voting no confidence in two top federal crimefighters.

34.   The explosions have been blamed on methane igniting after a cave-in.

35.   The earlier explosion has been blamed on an outlawed breakaway group known as the Real IRA.

36.   The government blamed the explosion on a deranged bomber, but parents said the students had been forced to make fireworks by school administrators.

37.   The government blamed that explosion on a lone bomber, but parents said the students had been forced to make fireworks by school administrators.

38.   The radio blamed the explosion on carelessness.

39.   U.S. investigators, however, blamed the explosion on a technical malfunction.

40.   HAMAS blamed the explosion on Israel and PLO chairman Yasser Arafat.