Locations which tested positive included the MillenniumHotel, the Abracadabra lap-dancing club and the Emirates football stadium, where Mr Lugovoi had watched Arsenal play CSKA Moscow.
The Bankers Trust building, 1 Liberty Plaza and the MillenniumHotel -- all of which are across the street from the complex and had suffered some visible damage -- are safe and will not be torn down, Sheirer said.