At least four people died inside a Kansas airport building where a small plane crashed at Wichita’s Mid-Continent Airport, authorities said Thursday. At least five others were injured and Wichita Fire Chief Ronald Blackwell said at least four people were unaccounted for hours after the Thursday morning incident, but a search was halted after a portion of the building collapsed. Only the pilot was in the plane and two people confirmed dead were found inside the building, Blackwell said. Wichita Fire Marshal Brad Crisp said the search would resume as soon as the building was deemed stable.