The district records 40.8 degrees Celsius, the highest this seasons
Kalparanjan breathed his last at Dhaka Community Medical College Hospital at Moghbazar on Wednesday, said his niece Hashi Chakma.
Kalparanjan was the former president of the Khagrachhari district wing of Awami League and two-times elected parliament member from Chattogram.
He had been suffering from old-age complications and was receiving treatment for a leg injury in the plastic surgery department, supervised by his doctor Tanvir Ahmed.
He became the minister of the Chattogram Hill Tracts Affairs Ministry in 1998, a year after the CHT Peace Accord.