Her return to Tamil Nadu is being keenly watched as it comes at a time when the assembly elections in the state are likely to be held in the next few months.
Sasikala was in prison since February 2017 along with Ilavarasi and late Jayalalithaa's foster son V N Sudhakaran in connection with the Rs 66 crore disproportionate assets case.
According to the hospital sources, as soon as she was admitted to hospital, authorities conducted a Rapid Antigen Test on her, which has come back negative for Covid-19.
She will have to pay Rs 10 crore to walk out of prison on January 27, 2021, else spend another 13 months behind bars.
Dhivakaran, who has fallen out of favour with Sasikala following his public spat with their nephew Dhinakaran, also introduced his party flag with red and black stripes, with an added green star in the centre
Election commission has given AIADMK rival factions time till September 29 to file fresh submissions.
Dhinakaran had "no authority or qualification" to remove those appointed by late AIADMK chief Jayalalithaa from party posts and his announcements in this regard were not binding on party affairs, a resolution adopted at the meeting said.
Roopa alleged that Sasikala has 'managed' to live the life of a Class 1 prisoner against the court order.
This is the first time that the chief minister has made a categorical assertion about the status of Dhinakaran's appointment by his aunt Sasikala on February 14 just ahead of her incarceration.
In the four-page report after visiting the central prison on July 10, Roopa said a special kitchen was functioning in the jail for Sasikala in violation of prison rules.