On the day Prince was found collapsed in an elevator at Paisley Park April 21, an unknown man made a frantic phone call to 911. He said that he was at Prince’s house and didn’t know the exact address. But what people didn’t know, until Wednesday, was the identity of the man, and why he was there.

According to the StarTribune, Andrew Kornfeld was sent to Prince’s estate to perform an intervention for prescription-painkiller addiction. Kornfeld’s father, Dr. Howard Kornfeld, runs Recovery Without Walls in Mill Valley, Calif., and he was originally supposed to head to Paisley Park, but due to his schedule, he couldn’t make it, according to the report.

William Mauzy, the Kornfeld family’s attorney, told the StarTribune that Kornfeld was called by Prince’s representatives April 20 because the singer was experiencing a “grave medical emergency.” On April 21, when Andrew Kornfeld arrived at Paisley Park at 9:30 a.m., no one could find Prince. After searching the estate, his body was found in the elevator.

Mauzy said the plan was to discuss treatment options with Prince. Mauzy also told the paper that the Kornfelds had hoped that Prince would agree to go to California for long-term care and round the clock nursing supervision. But it was apparently too late.

“The people are just distraught. We’re in Minneapolis, Minnesota, and we are at the home of Prince,” is what Andrew Kornfeld told the 911 dispatcher.

Prince was pronounced dead at 10:07 a.m, 19 minutes after first responders arrived.

Read more at the StarTribune.