A federal grand jury in Chattanooga ended its session Tuesday without indicting David Kernell, a University of Tennessee student, who is being investigated in the hack of Gov. Sarah Palin's email account.

A federal grand jury in Chattanooga ended its session Tuesday without indicting David Kernell, a University of Tennessee student, who is being investigated in the .

The Chattanooga Times Free Press reported Tuesday that a federal grand jury in Chattanooga had wrapped up hearings around lunch after failing to return an indictment. The paper noted that the FBI is still investigating Kernell, and that subsequent grand juries may still return an indictment.

Three students arrived at the federal courthouse on Georgia Avenue about 8:45 a.m. to testify, the paper reported. They did not give their names.

Kernell was linked to the hack of Palin's Yahoo Mail account after the alleged hacker posted details of the hack to 4chan.com. The poster's name reflected Kernell's e-mail address, while the IP provider of the hacker was the same as the one that provides service to Kernell's dorm. FBI agents subsequently searched Kernell's apartment over the weekend.

David Kernell is the son of Tenn. Rep. Mike Kernell, a Democrat. Gov. Sarah Palin of Alaska is the Republican vice-presidential nominee.

A lawyer for the Kernell family said that "the Kernell family wants to do the right thing, and they want what is best for their son," the Times Free Press reported.