BENTON HARBOR, Mich. (AP) _ A 12-year-old girl was killed on her walk to school Tuesday, crushed by a slab of concrete sidewalk when she and two companions fell into a sinkhole that opened up beneath their feet.

Twijuana Floyd's companions were quickly rescued after the 7:15 a.m. accident, but the seventh grader's body was not recovered until an hour later, after a crane removed the collapsed sidewalk slabs, officials said.

Her companions, both girls, were not immediately identified. Officials said one of them was treated for minor injuries at a hospital and discharged.

Public safety director David Walker said the seven- to eight-foot-deep sinkhole apparently formed after heavy rains had undercut the sidewalk about 20 feet from a bridge spanning Ox Creek.

The bridge and sidewalk, used by hundreds of students daily, will be closed at least two weeks for repair and inspection, officials said.