David Kernell's Apartment Complex

The FBI is stepping up its investigation into the possibility that a University of Tennessee student hacked into the personal e-mail of Vice Presidential candidate Sarah Palin.

A person who identified himself as a witness tells 10 News that agents with the FBI served a federal search warrant at the Fort Sanders residence of David Kernell early Sunday morning. Kernell lives in the Commons apartment complex at 1115 Highland Ave.

David Kernell is the son of Mike Kernell, a Democratic state representative from Memphis.