RIPON, Wis. (AP) – Ice that coats three buildings destroyed by fire in downtown Ripon is hindering the investigation into the cause of the blaze. Propane heaters have been brought in as investigators search the rubble.  Ripon Area Fire District Chief Tim Saul tells WLUK-TV ( ) the exterior walls will have to come down piece by piece.  Saul says they will pull the buildings apart with heavy equipment. The fire Wednesday not only destroyed the buildings, tenants who lived in upstairs apartments lost their belongings. No one was hurt in the fire.

— Information from: WLUK-TV,