81.   The Immigration and Naturalization Service, meanwhile, is investigating the possibility that Sotelo is an undocumented immigrant, a spokeswoman for the agency said.

82.   The National Association of Home Builders is investigating the possibility of establishing a nationwide uniform building code.

83.   The league has never investigated the possibility.

84.   The Pentagon is investigating other possibilities, including exposure to pesticides and smoke from oil-well fires.

85.   The police are investigating the possibility that the gunman is either a resident or someone who comes to the building to buy drugs.

86.   The researchers also investigated another possibility.

87.   The police are also investigating the possibility that the slaying was personal.

88.   The police said on Monday that they were investigating the possibility that a fifth person was involved in the attack.

89.   The shadow Cabinet agreed to establish a review committee to investigate the possibility of abolishing the elections.

90.   The Simon Wiesenthal Center in Los Angeles has urged Argentina to investigate the possibility that the bombing might have been carried out by Argentine ultra-nationalists.