UNB, Munshiganj :Three teenage boys were killed and 14 others injured in a head on a collision between a pick-up van and a truck on Dhaka-Mawa highway in Nimtoli area of Sirajdikhan upazila on Monday morning.The deceased were identified as Md Shuvo, 16, son of Rustom Ali, Md Rajat, 14, son of Giasuddin and Md Rafiq, 13, son of Joynal Abedin, all residents of Sonir Akhra area of the city.Derik Quiya, in-charge of Hashara Police Outpost, said the Dhaka-bound pick up van carrying a group of teenagers from Mawacollided with the truck, leaving 17 of injured.The injured were rushed to Dhaka Medical College Hospital where three of the injured succumbed to their injuries.