Santa Monica Chief Deputy City Attorney Terry White said he has received confirmation that Lohan has checked in to a rehab facility and he is satisfied with her location. He declined to say where Lohan is receiving treatment, but a source close to the actress who was not authorized to speak publicly said she has checked in to the Betty Ford Center in Rancho Mirage, Calif.
The "Liz & Dick" star is required to spend 90 days in rehab as part of a plea deal in a misdemeanor case filed after a June car accident.
Lohan has also re-hired longtime attorney Shawn Holley to handle her case. White said he was in contact with Holley on Thursday evening after hours of uncertainty about the actress' whereabouts.
Attorney Mark Jay Heller told a judge during a hearing Thursday that Lohan had checked in to a different rehab facility, but the starlet left it after a few minutes.
White was given several days to investigate that facility, which a state official said was not licensed to perform residential drug or alcohol rehab treatment. He said Superior Court Judge James R. Dabney will be updated on Lohan's location, but that it may not require a formal hearing.
Lohan's sentence called for her to spend three months at a lockdown rehab facility and also receive 18 months of psychotherapy to avoid a return to jail.
She pleaded no contest in March to lying to police and reckless driving.
Lohan has spent time at Betty Ford before. She served another mandatory rehab sentence at the treatment center, although her stay there was not without drama. Lohan, 26, got into an altercation with a rehab worker and within weeks of her release was charged with taking a necklace from a Los Angeles jewelry store without permission.
Russ Patrick, a spokesman for Betty Ford, said he could not confirm Lohan had returned to the facility, which is a licensed treatment hospital founded in 1982 and has treated numerous celebrities.
Lohan remains on probation in the theft case.
Holley has represented Lohan throughout numerous court proceedings, but the actress opted to have Heller, a New York lawyer unversed in California law, represent her in recent months.