Since the photographs are not given, answer is subjective. The Manner and Cause of Death is that the pistol was used to kill them.
This is known to be one that is made after carrying out a preliminary study. A preliminary study is known to be the study of other former or previous studies that has been carried out before by researchers.
Note that Since the photographs are not given, answer is subjective. The Manner and Cause of Death is that the pistol was used to kill them as they have been stopped and taken to a remote place to commit the crime.
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