41.   The state Department of Public Health is investigating to determine whether emergency workers acted properly.

42.   The Taliban also have said other aid organizations, including the United Nations, will be investigated to determine whether they are spreading Christianity.

43.   The Taliban also have said other aid organizations, including the United Nations, will be investigated to determine whether they too are spreading Christianity.

44.   The United Nations said it was investigating to determine the source of fire.

45.   Tokyo Police are also investigating to determine if criminal negligence was to blame for the injuries.

46.   U.N. officials were investigating to determine who was responsible for the attack.

47.   U.S. and NATO officials said they were investigating to determine whether the plane was hit or crashed because of mechanical failure.

48.   Authorities said Friday they were still investigating to determine whether to file charges against the individual who paid for the killings.

49.   The spokesman said both incidents would be investigated to determine whether police opened fire prematurely.

50.   Officials were investigating to determine the exact source of the explosion, it said.