Complainant of the Bangabandhu murder case AFM Mohitul Islam, who was the then personal assistant to the President, died of kidney complications at Bangabandhu Sheikh Mujib Medical University (BSMMU). He was 63.
"He breathed his last at 2.55 pm," a spokesman of the facility said.
He said Islam was being treated at the hospital for nearly two months while for the past several days he was kept under life-support system at the BSMMU's Intensive Care Unit (ICU).
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Islam left behind his wife, a daughter and a host of relatives, admires and friends to mourn his death.
Family sources said the body was kept in the ICU unit as his burial plan was yet to be finalized.
President M Abdul Hamid, Prime Minister Sheikh Hasina and Law Minister Anisul Huq conveyed deep sympathy to the members of the bereaved family and prayed for eternal peace of the departed soul.
Mohitul Islam was the then Resident PA of the then president while he was the key witness to the assassination of Bangabandhu along with most of his family members.
He lodged the murder complaint with Dhanmandi police station, as the delayed trial process began after Awami League under the leadership of Sheikh Hasina returned to power in 1996 general elections and scrapped the infamous Indemnity Act which until then protected the killers from justice.
Islam also appeared as the plaintiff or key-witness to the trial while his testimony set the course of the case.