WASHINGTON — The FBI probe of two men arrested in Amsterdam after suspicious items turned up in one of the men's luggage is finding they were probably not on a test run for a future terror attack, a U.S. official said Tuesday, casting doubt on earlier suggestions even as Dutch authorities held the pair on suspicion of conspiring to commit a terrorist act.
The U.S. does not expect to charge the men, a law enforcement official said. The two men arrested in Amsterdam — both traveling to Yemen — did not know each other and were not traveling together, a U.S. government official said.
The officials spoke to the Associated Press on the condition of anonymity to discuss the investigation.
The Amsterdam arrests came at a time of heightened alert, less than two weeks before the ninth anniversary of the Sept. 11, 2001, terror attacks. U.S. officials also have been concerned about Americans traveling to Yemen to join al Qaeda.
Before officials began casting doubt on the test-run theory, FBI agents were pursuing leads in Detroit, Birmingham, Ala.; and Memphis, Tenn., a law enforcement official said.
Earlier, U.S. officials said they were investigating whether the two men had been conducting a dry run for a potential terrorist attack. But as the probe evolved, officials said that appeared unlikely.
Both of the detained men missed flights to Washington Dulles International Airport from Chicago, and United Airlines then booked them on the same flight to Amsterdam, the U.S. government official said. The men were sitting near each other on the flight, but not together.
The men were not on any U.S. terror watch lists, White House spokesman Robert Gibbs told CNN Tuesday.
A U.S. official identified the men as Ahmed Mohamed Nasser al Soofi and Hezam al Murisi. Mr. al Soofi had a Detroit address. He had been living in Tuscaloosa, Ala., and working in a convenience store, the state's homeland security director, Jim Walker, said. There was nothing that Mr. al Soofi had done in Alabama that brought him to the attention of Alabama officials, Mr. Walker said.
Mr. al Soofi, who was bound for Dubai from Birmingham through connections in Chicago and at Dulles, was questioned by the U.S. Transportation Security Administration as he went through security in Birmingham on Sunday, one of the officials said.
He told the authorities he was carrying a lot of cash. Screeners found $7,000 on him, but he was not breaking any law by carrying that much money. It is not unusual for people to carry large amounts of cash when they travel to Third World countries.
TSA screeners took a closer look at his checked baggage. It was then that they discovered suspicious items in his bag, a cell phone taped to a Pepto-Bismol bottle, multiple cell phones and watches taped together, and a knife and box cutter, according to another U.S. official who had been briefed on the investigation.
None of the checked items violated U.S. security rules, so TSA allowed Mr. al Soofi to fly.
Kip Hawley, the former Transportation Security administrator, said it is not unusual to find items like watches and cell phones bound together on flights to countries like Yemen. He said this would always catch the screener's eye. In 2007, TSA alerted screeners that suspicious items found at U.S. airports may indicate that terrorists were conducting dry runs. Screeners are deliberately on the lookout for such items.
But when Mr. al Soofi got to Chicago, he changed his travel plans to take a direct flight to Amsterdam, while his luggage went on to Dulles. When customs officials discovered he was not on the later flight from Dulles to Dubai, they called the plane back to the gate and removed his luggage.
On international flights, passengers and their luggage must be headed toward the same destination, according to U.S. policy.
Mr. al Murisi also changed his travel plans in Chicago to take a direct flight to Amsterdam, raising suspicion among U.S. officials. Federal air marshals were on the flight from Chicago to Amsterdam, a law enforcement official said.
The men were arrested Monday morning at Schiphol Airport after getting off a United Airlines flight from Chicago. No charges have been filed against the men in the U.S., a law enforcement official said.
A Dutch prosecutor Tuesday did not address why the two men continued to be held even as U.S. officials cast doubt on the case.
"We are taking it seriously. Otherwise we would not have arrested them," Theo D'Anjou of the Dutch national prosecutor's office said.