HEFEI, April 9 (Xinhua) -- A coach bus carrying 49 passengers overturned Tuesday morning in east China's Anhui Province, killing five people, local authorities said.

The accident occurred at around 8:50 a.m. on a national highway in Feidong County. The driver was killed instantly. The injured were rushed to a nearby hospital, four of which died despite treatment while the rest are in stable conditions.

The coach, with a designed capacity of 55 people, belonged to a transport company in the province.

An investigation is underway.