71.   The Rockland County, N.Y., district attorney, Michael E. Bongiorno, said he was investigating the death to see if criminal charges were warranted.

72.   The police are investigating her death and say she may have been a robbery victim, because her purse was missing.

73.   The state went in to investigate the deaths of several mothers delivering babies and uncovered what it called serious systemic troubles.

74.   The story concerns a retired FBI agent with a heart transplant, who winds up investigating the death of the woman whose heart he has.

75.   The university is still investigating the death to see to what extent, if any, groupthink and other peer pressure played out that night.

76.   They are medical doctors trained as pathologists who specialize in investigating deaths that occur in accidents and under suspicious circumstances.

77.   They were investigating the death as a homicide.

78.   This thriller about a true-crime writer investigating the death of a congressman with whom she was having an affair probes the chilling neighborliness of modern evil.

79.   Those who investigated the death of President Kennedy believed the home movie to be the most important piece of evidence in the case.

80.   Two Florida detectives investigate the death of an enigmatic millionaire who was married to an adulterous woman.