Demi Lovato's loved ones have gathered by her side at Cedars-Sinai Medical Center in Los Angeles.
An eyewitness tells E! News the pop star's mother, Dianna De La Garza, and 16-year-old sister, Madison De La Garza, were seen at the hospital on Tuesday afternoon. A large security presence has also gathered outside Cedars-Sinai, we're told.
Lovato is currently being treated for a suspected heroin overdose. NBC News reports the 25-year-old is "stable and alert," though her exact condition is currently unknown. At around 11:40 a.m. local time, emergency personnel responded to an overdose call placed from a residence in the Hollywood Hills area. She was reportedly administered the overdose reversal drug Narcan.