HT Imam, the prime minister's political adviser, was rushed to Combined Military Hospital in Dhaka after falling ill.
The 82-year-old is undergoing treatment at the hospital, his son Tanvir Imam said on Wednesday, reports bdnews24.com.
Imam is suffering from various age-related problems coupled with kidney complications, according to an Awami League leader close to his family.
“Sir is undergoing treatment at CMH. Please pray for him,” Imam's aide Akbar said.
Imam, who was the cabinet secretary to the government during the Liberation War, has been the political advisor to Hasina since 2014.