DENVER (AP) -- The FBI's regional office in Denver has received at least a dozen calls about the pictures of seven suspected al-Qaida terrorists shown during a news conference, an agency spokeswoman said.

Calls about possible sightings are taken seriously and all leads are followed up, FBI spokeswoman Monique Kelso said Thursday. She added, though, that the FBI has no reason to believe any of the seven suspects are in Colorado or traveling through.

But a manager of a Denny's restaurant in Avon isn't convinced. Manager Samuel Mac said it took five hours for a seemingly uninterested FBI agent in Denver to return his message when he called to say he thought two of the suspects ate at his restaurant Wednesday.

Mac said the men he subsequently identified from photos as Adnan G. El Shukrijumah and Abderraouf Jdey. He said the two entered the restaurant just off Interstate 70 at 8 p.m. Wednesday. One ordered a chicken sandwich and a salad and the other ordered a salad.

The men said they were from Iran and were driving from New York to the West Coast, Mac said.

Attorney General John Ashcroft and FBI Director Robert Mueller showed photos of seven suspected terrorists during a news conference Wednesday on what they said was credible intelligence indicating an attack by al-Qaida was possible this summer in the United States.