In one night, at four separate homes, eight people are shot in their heads while sleeping.
Large marijuana grow operations are located at three of the homes indicating illegal drug trafficking by family members.
Cock fighting roosters were found at some of the locations indicating involvement in an ongoing illegal gambling operation at these locations.
To apply the standard investigative technique of establishing motive, means, and opportunity, one could establish the following:
Motive: Drug territorial dispute (eliminating the competition).
Means: Four different shooters striking simultaneously with silenced weapons.
Opportunity (1):
1. These eight people in four different homes went to sleep and neglected to lock their doors or the shooters brought lock technicians with them.
2. None of these homes had watch dogs that would have awakened them and alerted them to trespassers, or the shooters were able to poison/neutralize the dogs.
Opportunity (2):
1. A close family member had, over time, gained the keys to each of the homes and he accompanied the shooter as he went to each home.
2. This same close family member knew the dogs, and the dogs knew him, allowing him to approached them and poison them.