Three people were killed when a truck hit their vehicles on the Jalandhar-Pathankot G T road, about 40 kilometres from at Hoshiarpur on Monday, police said. The deceased were identified as tractor driver Avtar Singh of Dadial village, scooterist Balwant Singh of Dasuya town, motorcyclist Kewal Singh of Jalota village, they said. The truck driver, identified as Rajinder Singh, was later arrested, the police added.