Four people died of possible heat stroke in different parts of Nilphamari district on Tuesday amid the sweltering heat across the country.

The deceased were identified as Lal Babu, 52, of Sadar upazila, Manir Hossain, 52 of Bimla upazila, Mansur, 55, and Khodeza, 65, of Jaldhaka upazila of the district.

All of them suddenly fell sick and died while working under the open sky amid the intense hot weather, said officer-in-charge of Jaldhaka police station Ashraful Haque.

Local Met Office recorded 42 degrees Celsius temperature in the district on Tuesday.

Meanwhile, a very severe heatwave is sweeping over Jashore, Chuadanga, Pabna and Rajshahi districts and a severe heatwave is sweeping over Dhaka division and parts of Khulna and Rajshahi divisions.

Besides, a mild to moderate heatwave is lashing Barishal, Rangpur and Chattogram divisions and Mymensingh district and it may continue, said a bulletin of Bangladesh Meteorological Department.

Day and night temperatures may remain nearly unchanged over the country. Due to increase of moisture incursion, the discomfort may persist.