An international smuggling ring is said to have shared some information regarding the manufacturing of a nuclear weapon with Iran, North Korea and other countries. The Washington Post reported Sunday that the smugglers have shared nuclear designs with Iran. They allegedly had some blueprints for an advanced nuclear weapon.

The smuggling ring was led by Abdul Qadeer Khan, a Pakistani scientist who, allegedly, sold parts of a bomb to Lybia, Iran and North Korea. According to The Washington Post, David Albright, a former top U.N. arms inspector said that the smugglers also had designs of a more complicated nuclear weapon that could be fitted on a type of ballistic missile used by Iran and other countries.

Apparently, the blueprints were discovered back in 2006 in the computers of Swiss businessmen and the Swiss government recently destroyed them. U.N officials could not be sure if the material had already been shared.

“These advanced nuclear weapons designs may have long ago been sold off to some of the most treacherous regimes in the world," wrote Albright.

Nadeem Kiani, a spokesman for the Pakistani Embassy in Washington said that the government of Pakistan considered the “affair to be over,” reported the Associated Press. A senior diplomat from Vienna said he was also aware of the existence of a sophisticated nuclear weapons design. He kept his anonymity.