LOS ANGELES -- Authorities have released audio of a 911 call from the Hollywood Hills home of pop star Demi Lovato during her medical emergency this week.
The emergency operator can be heard telling an unknown female caller inside Lovato's house to "hang in there."
"We're on our way. We're going to be there shortly. Stay with the patient."
RELATED: Demi Lovato hospitalized for apparent drug overdose
Paramedics eventually treated Lovato, 25, with the drug Narcan before she was transported to the hospital.
"If you could gather any medication, if she's on any, that'd be helpful," the operator can be heard telling the woman over the phone."
RELATED: Demi Lovato awake after apparent drug overdose, recovering with family, rep says
It is still unclear what Lovato may have taken to cause her medical emergency.
She remains hospitalized at Cedars-Sinai Medical Center.
LISTEN: 911 call from Demi Lovato's home released
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