BNP Chairperson Khaleda Zia, who was admitted to Evercare Hospital in the capital over one and a half months ago, has been suffering from fever, the party's Secretary General Mirza Fakhrul Islam Alamgir said Friday.

“She (Khaleda) has been suffering from fever from last (Thursday) night. Doctors are looking into the cause of the sudden fever,” he said.

Speaking at a press conference at the BNP Chairperson’s Gulshan office, the BNP leader also said the party chief has been receiving medicine to recover from the fever alongside other diseases.

Fakhrul said the medical board formed by the hospital wills assess her condition on Friday.

He, however, said the former prime minister's overall health condition is fine as different parameters of her health are in good shape.

The 76-year-old BNP chief, who tested positive for Covid-19 on April 11, was admitted to Evercare Hospital on April 27 for a thorough checkup. She was shifted to the CCU with shortness of breath on May 3.

On April 28, a 10-member medical board, headed by Prof Shahabuddin Talukder, was formed for the treatment of Khaleda at the hospital a day after her admission there.

She tested negative for Covid-19 on May 8 -- 27 days after she had been infected with the virus -- but the BNP chief has been suffering from post-Covid complications.

The BNP chief’s family submitted an application to the government on May 6 seeking permission to send her abroad for advanced treatment but it was turned down as a convicted person cannot avail of such a scope.

Amid the coronavirus outbreak, the government freed Khaleda from jail for six months through an executive order suspending her sentences on March 25 last year.