Vehicular movement on the national highway was diverted after an LPG tanker overturned while negotiating a curve at Njhanumkai near Cheruvathur in the district late on Friday night. Panic gripped the busy route after the equipment brought from Mangalore to transfer the oozing gas from the tanker developed snag forcing the authorities to requisition personnel from Bangalore, who are expected to reach late this evening. However, the timely intervention of Fire and Rescue Service personnel and the police averted a major fire tragedy as they managed to plug the leakage. All the vehicular traffic along the highway was re-routed through Kayyur causing severe hardship to road users.