Two persons were killed when a sand-laden tractor crushed a rickshaw-van under its wheels at Vanga Madrasa area of the Bochaganj upazila in Dinajpur district on Thursday morning.The deceased were identified as Ujir Ali, rickshaw-van driver, son of Nazmul Islam of Porapukur, and Swapon Shah, son of Abdus Samad Shaher of Bakultola.Habibur Rahman, officer-in-charge of Bochaganj Police Station, confirmed the incident.