Mass-shooting suspect Jared Lee Loughner bought the gun used in Saturday’s killings on Nov. 30 at the Sportsman’s Warehouse, 3945 W. Costco Drive, the Associated Press and Washington Post report.

FBI Director Robert Mueller confirmed the timing of the purchase today and said it was a Glock model 19 9mm semi-automatic handgun.

The handgun purchase was legal, authorities said, and Loughner was not a prohibited possessor.

Loughner emptied one magazine during the shootings that killed six people and injured another 13, including U.S. Rep. Gabrielle Giffords, his target, authorities said. A woman at the scene prevented Loughner from loading a second magazine, said Pima County Sheriff Clarence Dupnik.

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