The unusual arrangement raised a0 question as to whether the killing involved ritualistic elements.

Both killings involved figures who have surfaced in the bombing case.

These killings could also involve the relatives of an offender.

The killing of the three Israelis on Thursday involved a novel method.

There had always been suspicions, he said, that the killing of his father involved people hunting for him.

The previous killings involved a Nicaraguan rebel commander and a reputed drug lord's lawyer.

The killing of "sick neighborhoods" involved reducing every public service, including sanitation.

But in the Soviet Union, the killings involved shootings on the spot.

His theory is that the killing involved a war among religious sects.

First, did a particular killing involve one or more "aggravating" factors?