Karnataka: In a horrifying incident, four persons were killed on the spot and another injured severely after an ambulance lost control and rammed into the toll gate. The shocking incident took place in Udupi district, Karnataka. According to the reports, an ambulance carrying eight persons from Honnavur to Udupi lost control and rammed into the Shiroor toll gate. In the video, the toll operators were seen running to remove the barricades after seeing the ambulance approach. The ambulance lost control on the wet road and rammed into the toll cabin. The incident was caught on CCTV cameras and the video is doing round on the internet.