LOS ANGELES (MCT) — Officials probing the death of Sage Stallone are trying to determine how several large bottles of prescription pain medication came to be in his home at the time of his death.

Law enforcement sources said Wednesday it’s unknown whether the pills played any role in Stallone’s death but said the amount of pill bottles found at Stallone’s Studio City home was enough to warrant investigation. Some of the containers were empty, the sources said. it’s unclear to whom the pills were prescribed.