Jared Loughner (Mug Shot): Arizona Shooting Suspect Appears in Court

PHOENIX (CBS/AP) Jared Loughner, the suspect in the Tucson, Arizona shooting rampage that left six dead, is being held without bail and has been assigned Judy Clarke, a lawyer who defended "Unabomber" Ted Kaczynski, as his attorney.

PICTURES: Arizona Shooting Victims

Loughner entered the courtroom Monday handcuffed and wearing a tan inmate uniform. His head was shaved and he had a cut on his right temple.

The 22-year-old is accused of killing six people on Saturday and injuring 14 others, including U.S. Rep. Gabrielle Giffords.

His expression was impassive as he walked in, looked straight at the crowd at the back of the room packed with reporters, then turned around to speak to his attorney, Judy Clarke. He responded "yes" when asked if he understood his rights.

The courtroom was under heavy guard with about a dozen U.S. marshals.

Loughner is charged with one count of attempted assassination of a member of Congress, two counts of killing an employee of the federal government and two counts of attempting to kill a federal employee. More charges are expected.

CORRECTION: Earlier reports incorrectly stated that Clarke had defended Oklahoma City bombing conspirator Timothy McVeigh.

COMPLETE COVERAGE OF THE ARIZONA SHOOTING FROM CBS NEWS