CNN.com - FBI questioning 'several' people as probe intensifies - September 12, 2001 The son-in law of the owner of one of the houses said a Middle Eastern family lived in the house. The son-in-law said he thought the man was enrolled in a nearby aviation safety school because he wore the uniform of the Piper school.

The family, the son-in-law said, moved out over the weekend.

The wife, he said, dressed very modestly in Middle Eastern style clothing, covering her face and hair.