A speedy truck crushed three labourers to death at Indus highway near shrine of Talib Shah near district headquarter town Dadu on Friday. The labourers were working at road construction site. The deceased workers include Afzal Memon, Faisal Shahani and Rafi Shahani, all residents of Bhan Syedabad. The driver fled from the scene after accident. Police have impounded the truck.