Prince performs at the 10th Anniversary Essence Music Festival at the Superdome on July 2, 2004 in New Orleans, Louisiana.

Prince performs at the 10th Anniversary Essence Music Festival at the Superdome on July 2, 2004 in New Orleans, Louisiana.

*More news about Prince‘s health before his death is coming to light.

On the day after he died, he was supposed to meet with a doctor specializing in addiction treatment to deal with a “grave medical condition.”

Dr. Howard Kornfeld, a national authority on opioid addiction, could not clear his schedule on April 21st, so he sent his son, Andrew, to meet with the singer, according to the Star Tribune.

Dr. Kornfeld was supposed to come the following day, and his son — who works with him at the Recovery Without Walls clinic — was going to outline the course of treatment. Andrew is the person who called 911 to report Prince was lifeless in the elevator.

According to the report, Dr. Kornfeld was initially contacted by one of Prince’s reps, who said the singer “was dealing with a grave medical emergency.”

Here’s more from the Star Tribune report:

Authorities said Prince was alone when his body was found. Foul play and suicide are not suspected. Autopsy results, which will include toxicology tests, are pending.

Within days of Prince’s death, sources told the Star Tribune that his use of painkillers, which were found at the scene, had become the focus of the investigation. As part of their probe, investigators are trying to determine where Prince got the pills and who provided them.

While authorities have characterized their work as a criminal investigation, that doesn’t mean that it will result in charges.

After he was first contacted by Prince’s representatives, Howard Kornfeld requested that a Twin Cities physician check on Prince and stabilize him, sources said.

It was hoped that Prince would agree to go to California for long-term care under Kornfeld’s supervision, which would include round-the-clock nursing support.

Six days before Prince was found dead, his private plane was returning to Minneapolis after two concerts in Atlanta when it made an emergency landing in Moline, Ill. Sources with direct knowledge of the investigation have said that the landing occurred because Prince was overdosing on opioids.