A Department of Environmental Protection truck, cops and firefighters and “people in Hazmat suits,” were standing in front of a brownstone at 401 Fourth Street between Sixth and Seventh Avenues in Park Slope, Brooklyn, Brownstowner reported today. Detective Martin Speechley of the NYPD’s public information unit said that inside the home investigators found a dead white male, age 65, and “a clear, white liquid believed to be cyanide,” in a telephone interview. The victim was Robert Siegel, and his wife called police after finding him there. Speechley said that no cause of death has been determined yet. When asked whether this was a suicide, he reiterated that the medical examiner is still investigating. "We just don’t suspect criminality," said Speechley.