Former Lok Sabha speaker Somnath Chatterjee has been admitted to a private hospital in south Kolkata with chest infection.
"He is stable. And there is no immediate cause for concern," AMRI hospital Dhakuria medical superintendent Sumon Ghosh told IANS.
The 80-year-old Chatterjee was admitted to a private cabin late on Saturday with fever, cough and cold under the treatment of chest specialist Subhasish Ghosh.
"He has been put on antibiotics. He is fully conscious," Ghosh said.
Chatterjee, a former parliamentarian of repute, presided over the Lok Sabha from 2004 to 2009.
He was expelled from the Communist Party of India-Marxist (CPI-M) in 2008 for presiding over a Lok Sabha trust vote in mid-2008 disregarding a diktat from the party to step down from the speaker's post after it withdrew outside support to the Manmohan Singh-led United Progressive Alliance (UPA) government over the Indo-US civil nuclear deal.