DES MOINES, Iowa (AP) -

Authorities are investigating the death of a man whose body was found in the backyard of a house in central Des Moines.

Officers were sent to the area a little before 6 p.m. Thursday. Neighbors report that the man had been seen in the yard earlier Thursday and appeared to be drunk of sleeping. Other neighbors report seeing blood and a knife near the man.

Police haven't released the man's name and the suspected cause of his death. The case is being investigated as a homicide.