Harbin -- Nine people buried following the collapse of a factory building's roof in northeast China's Heilongjiang Province have been confirmed dead, local authorities said.

Officials with the emergency response office of Mudanjiang City said the accident, which happened at 1:10 p.m. in the city's Aiming District, was probably caused by blizzards.

The rescue work wrapped up early Tuesday with the bodies of all nine people found. Local authorities are now gearing up post-accident management as well as a safety check across the city amid heavy snowfall.

A new round of snow pelted the northeastern Chinese provinces of Heilongjiang and Jilin from Sunday, closing highways and canceling flights in many places.