HARBIN - Three people were killed and five others injured early Friday morning after four trucks they were travelling aboard plunged off a collapsed bridge in a northeast China city, police sources said.

The accident occurred at about 5:30 a.m. when the approach ramp of the Yangmingtan Bridge spanning over the Songhua River collapsed in Harbin, capital of Heilongjiang Province.

The 15.4-km long bridge was open to traffic in November last year. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters.

Trucks plunge off a collapsed bridge in Harbin, capital of Heilongjiang province, Aug 24, 2012. [Photo/Xinhua]