By King 5 News and msnbc.com staff
BELLEVUE, Wash. -- Two men who knocked on a Bellevue door answering a Craigslist ad for a room to rent instead found a dead man inside.
The men had approached the home in a subrub of Seattle on Saturday. A 4-year-old boy answered the door crying, saying he couldn't wake up his dad.
The men took the boy to a neighbor's house and said they would go check on the boy's father. They went back to the residence and found the man's body and called 911.
Bellevue police said the man was in his 30s and appeared to have died of natural causes a couple of days ago.
Police said there were no signs of foul play, but they will investigate because of the unusual circumstances of the dad's death.
The boy's mother does not live at the home and was out of town Saturday, said police. Officers were able to locate the boy's grandparents and placed the boy in their care Saturday night.