Five people were missing after a fire in a Swiss Alpine town, local police said. Eight others were injured. Investigators had not determined what started the blaze.

Police released few additional details in their initial account. They did not name the town or describe how many buildings were involved. Identities of the missing and injured were not made public.

Emergency crews responded in mountainous terrain, where access can slow firefighting and medical aid. Authorities did not comment on response times or conditions at the scene. No timeline was given for when the fire started or was contained.

Five people were missing and eight others were injured, local police said.

Traditional Alpine construction often relies on timber, which can allow a fire to spread once it takes hold. Weather and steep ground can also affect how crews operate. Police had not cited those factors in this case.

The inquiry remained open, with no cause announced. Cantonal authorities in Switzerland typically lead such investigations. Further official information had not been issued at the time of the first reports.