Suspect Pleads Not Guilty in Deadly Arizona Shooting

By Jacques Billeaud | January 24, 2011 | 3:59 PM EST

Carl Josehart, right, CEO of TIRR Memorial Hermann Rehabilitation Hospital, introduces Dr. Gerard Francisco, the hospital's chief medical officer, during a media tour of the facility on Saturday Jan. 22, 2011, in Houston. U.S. Rep. Gabrielle Giffords arrived Friday at the Texas Medical Center, where she is expected to spend a few days in intensive care before moving to TIRR Memorial Hermann rehab hospital. ( AP Photo/Houston Chronicle, Smiley N. Pool )

Tucson, Ariz. (AP) - The man accused of carrying out the mass shooting in Tucson pleaded not guilty Monday to charges he tried to kill Rep. Gabrielle Giffords and two of her aides.

The plea by Jared Lee Loughner marked his second court appearance since he allegedly shot the congresswoman and 18 others at Giffords' meet-and-greet event on Jan. 8 outside a grocery store in Tucson. Six people died, and 13 others were wounded.

Loughner faces federal charges of trying to assassinate Giffords and attempting to murder two of her aides. He will later face state charges dealing with other victims.