The State Department believes many thousands more may have been destroyed when NATO planes bombed Gadhafi's weapons depots. Their experts are now going to those sites to try and catalogue how many were there. It's also unclear how many Gadhafi may have used or how many others may no longer be operational after years in storage.
The rest are believed to be in the hands of the militias who looted some of the weapons caches during and after the war.
"The key now is convincing those who hold onto these weapons to turn them in and take them out of circulation. And we were working with the Libyan authorities on the best way to do that," Shapiro told reporters, adding that they are also in touch with the militias.
The State Department Monday released a report entitled "To Walk the Earth in Safety" on its efforts to destroy and clear conventional weapons like MANPADs and land mines around the world.