Aron
Murder suspect Levi Aron is escorted out of a New York Police Department precinct in Brooklyn, New York, July 14, 2011. Aron is under arrest in connection to the dismembered remains of Leiby Kletzky, 8, who had gotten lost walking home from camp, found in a freezer and a trash container on Wednesday. Reuters

The eight-year-old Brooklyn boy who was kidnapped and murdered by Levi Aron last week had been drugged before being killed, according to a medical examiner in the case.

NBC News in New York reported that the medical examiner said the child victim, Leiby Kletzky, was given muscle relaxant, anti-psychotic drugs, painkillers and Tylenol before he was smothered to death and dismembered.

The anti-psychotic drug, quetiapine, is typically used to treat symptoms of schizophrenia.

Aron is likely to face a grand jury indictment Wednesday in connection with the horrific killing.

Aron has pled not guilty to charges of first-degree murder and kidnapping. His lawyers have said that their client “hears voices” and suffers from hallucinations.