Officials investigate wall that toppled, fatally trapped worker

Safety officials are investigating today what caused a section of a concrete wall to topple while the wall was being removed, fatally trapping a construction worker Tuesday in South San Francisco.

Chiu Chun Wong, 50, of San Lorenzo, was working with a construction crew to remove a section of a concrete wall from a building at 220 Michelle Court when a section of the concrete measuring about 20 feet by 10 feet became dislodged from the wall and fell just before 1 p.m., police said.

A second adjoining section of concrete subsequently fell and trapped Wong underneath, according to police.

Wong died at the scene.

California Occupational Safety and Health Administration officials, South San Francisco building inspectors and the city engineer are investigating the incident, police said.

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