(AP) -- ST. LOUIS (AP) -- Investigators in St. Louis are trying to determine if high winds caused a building collapse that trapped two people, including a woman who had to be rescued.

Firefighters were able to pull the unidentified woman from the rubble of the three-story building that collapsed Thursday afternoon.

Fire Captain Dan Sutter says the building collapsed onto another three-story building. Fire fighters pulled the trapped woman out through a second-floor window. She declined medical treatment.

Wintry weather blew into the St. Louis region Thursday with strong wind gusts accompanied by mostly light but blowing snow.

In Shelbyville, a northeast Missouri high school student is nursing an arm injury after his school bus was blown over by high winds.

WGEM-TV reports that a bus carrying about three dozen North Shelby High School students was returning to school from a field trip Thursday morning when a wind gust caught the bus and caused it to overturn near Shelbyville, about 45 miles west of Hannibal.

The injured student was treated at the scene with an arm injury.

The accident happened as strong winds and snow arrived in much of the Midwest, including northeast Missouri.

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