A judge on Thursday granted the family's request to have the 27-year-old starlet's temporary psychiatric hold extended for up to two weeks, E! News confirms.
Bynes, who was originally supposed to be released today after being placed on a 72-hour-hold Monday, was represented by a court-appointed attorney.
We're told that Rick and Lynne Bynes asked Amanda's doctors to recommend to a judge that it was in her best interest to remain in the hospital.
Rick and Lynne are expected in court tomorrow morning to request a temporary conservatorship that would place them in charge of their daughter's legal and personal affairs.
Bynes was detained by Ventura County Sheriff's deputies Monday night and ultimately placed on a 5150 hold (she was deemed a possible danger to herself or others) for a mental-health evaluation after she allegedly started a fire in the driveway of a home near her parents' house in Thousand Oaks, Calif.
Witnesses to the incident said they saw Bynes with a gas can and at one point her pant leg caught fire. Despite being taken into custody, she was not arrested and no injuries were reported.
It's unclear when exactly Bynes returned to L.A. from New York, where she's been living for the past few months and is facing charges of reckless endangerment, tampering with evidence and criminal possession of marijuana for allegedly throwing a bong out of her apartment window as police were arriving in response to a call about her smoking pot in the building's lobby.
A source told us that Bynes' parents are currently caring for the pet Pomeranian that has her constant companion of late.
—Reporting by Claudia Rosenbaum