One person has been confirmed dead and at least six others were trapped after a building under construction collapsed Monday in southwest China's Guizhou Province, local work safety authorities said.

The accident happened around 11 a.m. when a four-story residential building toppled in Yangguan Village in the provincial capital of Guiyang City, said a spokesman with the provincial administration of work safety.

At that time, about 20 people were working on or living in the building.Thirteen of them escaped or were rescued after the accident and one person was later found dead, said the spokesman.

Six to nine people, including a child, were still trapped in the rubble, he said, adding that rescuers were working to confirm the exact number of those trapped.