Seven persons, including six from Srikakulam district and one from Vizianagaram district, died on Thursday due to sunstroke. In Srikakulam district, three daily wage labourers – Misala Narayanamma (75) of Buditi Kancharam village and Pydi Varahalamma (63) of Kintali village under Ponduru mandal and Venkata Rao of Mandasa mandal died of sunstroke. Three others -- V. Appana (58) from Lavetipalem village, Basava Seethamma (62) from Paparaopeta village and Pydi Pydamma (65) from Pydipeta village under Ranasthalam mandal are reported to have succumbed to the heat wave.