JEDDAH, 23 March — Three Saudi youths died in a road accident in the northeastern border town of Hafr Al-Baten when their car collided head on with a truck, Al-Riyadh reported yesterday. In a separate incident, a teenager fatally injured a Pakistani by driving a pick-up truck over him. The accident occurred while the 15-year-old was playing with the expatriate worker, who is now in intensive care at King Fahd Hospital in Baha. Also on Thursday, a SAPTCO bus, which was traveling from Taif to Baha, overturned, injuring 37 passengers.