JHAPA: Four persons were killed and three others injured at Dundamari on the East-West Highway on Friday when a passenger bus crashed into a Maruti van. Mahendra Kumar Limbu of Sungnam in Tehrathum and his wife Dhan Kumari died on the spot. Van driver Surya Bahadur Raya died while undergoing treatment at Life Line Hospital in Damak while one Sagar Tamang lost his life at Kanchanjunga Hospital in Birtamod.