1.   Dillon said Tuesday that the arrests had not produced evidence the killings were related.

2.   Some officials nevertheless speculated that the killings were related to reports that a bitter territorial dispute between Armenia and neighboring Azerbaijan is about to be settled.

3.   The police said they suspected the killings were related to this demand for money.

4.   Theories also vary as to whether the killings are related and whether they were committed by one person or by copycats.

5.   Police said the killings were apparently related to drug trafficking.

6.   Police say they do not believe the killings are related to the strike or the student protest.

7.   But authorities, including President Carlos Salinas de Gortari, have said there is no evidence to suggest that the two killings were related.

8.   But investigators said there was no immediate indication the killings were related to the drug trade.

9.   Garza Guzman said there was no evidence the killing was related to drug traffickers.