Spo
kesman Lt. Frank Vanore said Friday that city police questioned whether it was linked to the taping of a TV program.
But a Food Network statement says no balloons were used in the Thursday morning taping of "Chef vs. City."
A guard discovered the stray balloon outside the Liberty Bell entrance that afternoon, leading authorities to shut down the area. The FBI says tests show the powder was not hazardous; the National Park Service says it was flour.
Meanwhile, police say powder found on a letter sent to a municipal office building near City Hall that prompted a limited evacuation Friday was not hazardous.
