TULSA - Tulsa police are investigating the city's 17th homicide of 2013, and family members say the victim was the son of the late Will Sampson, a well-known Oklahoma actor.
Robert Sampson, 54, was found dead inside his west Tulsa home Thursday. He had been missing for two weeks.
READ: 'Landlord tips TPD to tenant's decomposed body' (http://bit.ly/16vKwHm)
Police say they walked through the house once and never found Sampson's body. It was a second search of the residence when they found him, but few details have been released other than the fact that his body was badly decomposed.
Tulsa crime scene investigators are still gathering evidence at the home.
Sampson's sister Lisa Boowie said she knew something was wrong after leaving her brother voicemails for weeks and never getting a response.
Boowie says she doesn't know who would kill her only brother.
Up until recently, Boowie says a woman was living with Sampson but had since been kicked out.
Sampson's landlord also lives on the property, and was the one to call police after finding bloody sheets and clothes in the home.
Sampson's cause of death has not been released.