Biren Barthakur, a social worker as well as an established businessman of Morigaon town, breathed his last on January 28 at his residence at Sunarigaon due to age-old ailments. He was 85. He was the former president of the Morigaon Sewaashram Committee. Besides, he was associated with various organizations in the town. He leaves behind wife, three sons, a daughter and a host of relatives.