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GENEVA (AP) — Swiss police say the last remaining unstable part of an Alpine glacier has sheared off onto a glacier below without hitting a nearby town or hurting anyone.

Authorities evacuated some 220 people in the southern town of Saas-Grund on Saturday after radar surveillance of the Trift glacier showed its snout was moving fast.

Early Sunday, more than two-thirds of the glacier’s front edge — which originally measured some 500,000 cubic meters (17.6 million cubic feet) — collapsed onto another glacier.

Police allowed residents to return home later Sunday.

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Valais canton (state) police said Monday the remainder of the unstable glacier’s front edge broke off overnight and the area was reopened to walkers. Authorities had been keeping a close eye on the ice, which has been considered unstable for nearly three years.