Demi Lovato is experiencing "complications" and remains hospitalized following her apparent drug overdose, according to CNN.
Although she's expected to "make a full recovery," there is "no estimate" as to when she will be released from Cedars-Sinai Medical Center in Los Angeles.
No information has been released regarding what led to her hospitalization.
A source close to the singer denied rumors that Lovato overdose on heroin.
Another source told CNN that Lovato plans to seek drug abuse treatment upon release from the hospital.
Her family and former boyfriend, Wilmer Valderrama, have been by her side since her hospitalization one week ago.