DHAKA (AFP) ― Bangladesh President Zillur Rahman, a veteran ruling party politician named to the largely ceremonial post in 2009, died Wednesday in a Singapore hospital, officials said. He was 84.

Rahman, who was suffering from kidney and respiratory problems, was flown to Singapore’s Mount Elizabeth Hospital by air ambulance on March 10 after his health worsened.

The nation declared three days of mourning after his death in the early evening in Singapore and Prime Minister Sheikh Hasina expressed her “profound shock” and lamented “an irreparable loss to the country and its people.”

Rahman’s secretary Shafiul Alam told AFP that the close aide of the nation’s founding leader Sheikh Mujibur Rahman had been suffering from “old age complications.” He leaves behind a son, who is a lawmaker, and two daughters.

The body of the former deputy chief of the ruling Awami League will be flown back to the country on Thursday, he said, with his funeral and burial taking place on Friday afternoon.

In response to his death, Singapore’s ministry of foreign affairs expressed its “profound sadness” in a statement Wednesday night.

“The ministry would like to extend its deepest condolences to the bereaved family, the government of Bangladesh and the people of Bangladesh during this time of national mourning,” the statement said.

It added that it was working with the High Commission of Bangladesh for Rahman’s body to be flown back home.

U.N. spokesman Martin Nesirky said U.N. Secretary General Ban Ki-moon was saddened by the death of Rahman, who “made important contributions to the country’s democratic transition throughout his political life”.

A lawyer by profession and one of the longest serving lawmakers in the country, who first joined parliament in 1973, Rahman earlier made his name as an activist who pushed for Bangladesh to break free from Pakistani rule.

As a student leader and political organizer he played an active role in the Language Movement in 1952 for the establishment of Bengali as a state language, a crucial campaign that helped cement the idea of Bangladeshi statehood.

Authorities in what was then East Pakistan sentenced him to 20 years in jail in absentia during the independence war of 1971 and confiscated all his properties.