YINCHUAN -- Three people were killed and two others injured when a wedding car fell into a reservoir in Northwest China's Ningxia Hui autonomous region on Friday.

The accident happened at about 10 am, when the wedding car slipped into the Sikouzi Reservoir of Haiyuan county, killing the driver, the bride and the bride's grandmother. Two other passengers were rescued from the 20-meter-deep reservoir by local people, according to a police official.

Initial investigation attributed the accident to an icy road caused by two days of snow.

Snow started to fall on Tuesday in regions including Ningxia, Shaanxi, Shanxi, Hebei and Henan, according to the National Meteorological Center.

Snow in these regions could be as deep as 16 cm, it said.