About 100 Maoist guerrillas set ablaze a private bus on a national highway in the restive Bastar region of Chhattisgarh and also looted some of the passengers, police said on Friday.

The Maoist rebels stopped a Hyderabad-bound private bus, which had started from Kirandul town, on National Highway 221 close to the Andhra Pradesh border, about 500 km south of the state capital here.