Times of London 

U.S. officials are investigating reports that Islamic terrorists have smuggled Stinger ground-to-air missiles into the United States from Pakistan. Senior Iranian sources close to the fundamentalist regime in Tehran claimed this weekend that TWA flight 800 was shot down last month by one of three shoulder-fired Stingers of the type used by Islamic guerrillas during the Afghanistan war. The sources said the missiles arrived in America seven months ago after being shipped from Karachi via Rotterdam and on to the Canadian port of Halifax. They claimed an Egyptian fundamentalist group backed by Iran was responsible for smuggling the weapons across the Canadian border into the United States. The group, the Gama'a al-Islamiya, comprises followers of Sheik Omar Abdel-Rahman, a blind Egyptian cleric jailed in the United States over the 1993 New York World Trade Center bombing. 

A senior White House official responsible for counter-terrorism told The Sunday Times this weekend that he had seen a report that a Stinger missile had been smuggled into the United States from Pakistan. The official, who is involved in collating intelligence relating to the TWA inquiry for the White House, said investigators were aware of reports that Stingers may have been smuggled into the country.... If a Stinger was the cause of this, our first theory would be that it came from Afghanistan." The official was commenting on reports from Tehran that claimed several groups funded by the religious authorities in Iran are active in the United States. The reports claim one previously unknown underground group called Falakh may have as many as 50 highly trained terrorists in the country.