At least four people were killed when a truck collided head on with a private car in Sylhet on Sunday early.The incident occurred in front of the Moglabazaar Thana on Sylhet-Fenchuganj road. The deceased were identified as Druba Joti Das, 36, an official of Pubali Bank, Adil Chowdhury, 34, Sanjit Das, 30 and Prokrity, 32.All of them were sent to Sylhet M. A. G. Osmani Medical College Hospital.Locals said, a truck collided head on with a private coming from opposition and four passengers of the private car were killed on the spot. Hearing the news Fire Brigade personnel rushed to the spot and recovered them and sent to hospital. In this connection Officer-in-charge of Moglabazaar Khairul Fajal said, the incident took place due to severe fog. The bus was sized but its drive fled away after the incident.