A 38-year-old father from Picture Rocks, Arizona, was arrested after his 9-year-old’s decomposing body was found on a couch. Police took Joseph Gregory Antonsen into custody on suspicion of negligent homicide and child abuse in connection with his son’s death. Antonsen told investigators that his son fell ill about two days before his body was found and that he had planned to take him to receive medical attention, according to a complaint filed in Pima County Justice Court. He explained that he started the car to take his son to the hospital, but when he went back into the house to put on a sh…