Authorities say a Tempe woman was found dead in her home after her friend went to visit her on Thursday.
Tempe police Sgt. Mike Pooley said the friend told police he visited his friend four days ago, but nobody answered her apartment door so he left.
Pooley said the man returned to the home near Mill and Southern avenues Thursday night and noticed the back sliding glass door was open.
When he went to investigate, he saw the woman's autistic 4-year-old son naked inside.
Police said when the man went inside, he found his friend dead on the floor.
Pooley said it appears she has been dead for several days.
Authorities say her cause of death is unknown and the 4-year-old child was unharmed.