He died at Monno Medical College and Hospital in Manikganj he founded, said BNP's local unit leader Mainul Islam Shanto.
Monno had been suffering from old-age complications for several years.
He will be buried after his younger daughter Afroza Khan Rita flies in from London, his family said.
Monno was elected as
As a senior BNP member from Manikganj, he was also the president of the district unit and a member of BNP Chairperson Khaleda Zia’s advisory council.
Khaleda and BNP Secretary General Mirza Fakhrul Islam Alamgir expressed condolences over the death and conveyed their sympathies to the family.