Complex sentence: A number of the deceased have been confirmed to know each other and the most recent confirmation is that of 15 year old Nathaniel Pritchard and less than 24 hours after his death the death the body of his 20 year old cousin Kelly Stephenson was discovered.
Split into simpler sentences: A number of the deceased have been confirmed to know each other. Less than 24 hours after the death of a fifteen year old the body of his 20 year old cousin Kelly Stephenson was discovered.