Four persons were killed when an oil tanker hit a motorcycle here in Sheikhupura on Wednesday, police said. According to details, the incident occurred at Sargodha Road near Nabipura where four friends were riding on motorcycle when it collided with a trailer. As a result, two persons died on the spot while two others succumbed to injuries in the hospital. The deceased were identified as Imran, Naqash, Waseem and Naveed. Police registered case and started investigation.