WASHINGTON (AP) — The FBI searched the residence of the son of a Democratic state lawmaker in Tennessee over the weekend looking for evidence linking the young man to the hacking of Republican vice presidential candidate Sarah Palin's personal e-mail account, two law enforcement officials told The Associated Press on Monday.

David Kernell, 20, has not returned repeated phone calls or e-mails from the AP since last week. His lawyer said Monday the family is going through a difficult period.