Disaster Management and Relief Minister Asadul Habib Dulu fell sick on Saturday morning at Saidpur Airport in Nilphamari district while traveling to Lalmonirhat.
An air ambulance has already left from Dhaka to bring him back to the capital, Abdur Gafur Sarkar, president of Saidpur district BNP, confirmed at 12:40PM on Saturday.
The minister arrived at Saidpur Airport by a flight from Dhaka in the morning and fell sick at the lounge while discussion was underway with the party leaders and activists.
He was immediately taken to the Combined Military Hospital (CMH) at Saidpur Cantonment where he received primary treatment.
Gafur Sarkar said arrangements were initially made to send the minister back to Dhaka on a scheduled flight.
However, as his condition did not improve he was unable to travel by commercial flight.
Later, it was decided to send him to Dhaka by an air ambulance, he said.