Authorities are investigating the deaths of three people inside a Marana home as a murder and suicide.
Marana police say a family member entered the home Friday night and found the three adults dead.
According to detectives, there is no outstanding suspect.
Investigators say preliminary evidence indicates one of the three killed the other two.
All three of the deceased were family members.
Police did not say how they died or a give a possible motive.
The incident remains under investigation.
