is quoting a state fire marshal's investigator as saying he is looking into a possible connection between the death of former Des Moines developer Bob Knapp and the fire that destroyed the downtown Younkers building. "You don't have to be a rocket scientist to say, 'Hmm, something is weird there,' " Ron Humphrey with Iowa's State Fire Marshal Division told the Register. Knapp had just been released from prison after serving two years on charges that he improperly disposed of asbestos while renovating the Equitable building downtown.