Latest on Arizona Shootings: 6 Dead & 13 Wounded, Congresswoman Giffords Critical, 2nd Suspect Sought

Photo: Matt York (Associated Press)US Congresswoman Gabrielle Giffords of Arizona is in critical condition after surgery for a single "through-and-through" gunshot wound to the head.

Giffords, a Democrat, was the first victim in a mass shooting as she held a "Congress on Your Corner" event outside a Safeway supermarket in Tucson. The gunman, alleged to be 22-year-old Jared Loughner, then fired into the crowd, killing six people, including Federal Judge John Roll and a 9-year-old girl. Thirteen other people, including Giffords, were wounded.

The shooting took place about 10 a.m. local time (1700 GMT) on Saturday. The gunman used a semi-automatic Glock pistol, firing about 20 shots, before he was overpowered as he tried to reload.

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