Kolkata, July 12 - Veteran Marxist leader and former West Bengal chief minister Jyoti Basu, who was admitted to hospital here after he fell unconscious Sunday, is stable and making satisfactory progress, hospital authorities said. He is to undergo a CT scan of the brain.

The 96-year-old leader, who was rushed to the AMRI Hospital near his Salt Lake home 'Indira Bhavan' Sunday after he became unconscious, is being treated in an Intensive Cardiac Care Unit, hospital officials said.

A seven-member medical board -- comprising specialists from cardiology, neurology, gastroenterology, surgery and geriatrics -- examined Basu Monday morning and decided to conduct the brain scan.

Basu, who was chief minister for a record 23 years, has a clot in the brain from a fall at his home September last year. The doctors had advised surgery but he did not opt for it.

'The board is satisfied with Basu's progress. Overall, his condition is stable. All parameters are okay,' hospital medical superintendent Debasish Sharma told IANS.

Basu slept well Sunday night and continued to be on a liquid diet, while his condition was being monitored round-the-clock, he said.