SAPTARI: United Democratic Madhesi Front (UDMF) cadres have set an ambulance on fire in Bhardah along the East-West Highway today. A local Ashok Majhi said that the cadres torched unidentified ambulance heading to Kathmandu from Birtanagar. The ambulance was carrying a patient to Kathmandu. According to local Majhi, the protesting cadres torched the ambulance after taking out the fuel.