LOS ANGELES, CA (Catholic Online) - A FN Five-Seven semi-automatic pistol, the high powered handgun in question is originally restricted to military and law enforcement. The handgun was recovered by Mexican police at the scene of the shootout between the Sinaloa Cartel and the Mexican military.

An investigation has proved that the gun was purchased in January of 2010 by George Gillett, the former No. 2 in the ATF office in Phoenix, Arizona.

Gillett bought the weapon at Legendary Arms, a Phoenix gun store. On the federal form 4473 used to buy the gun, Gillett used the ATF office address, 201 East Washington, and said "Apt 940." On subsequent purchase, Gillett used a commercial address -- that of a strip mall.

Both purchases were illegal, since ATF regulations require buyers use their residential address. Gillett now works at ATF headquarters in Washington as a liaison to the federal Bureau of Prisons.

"Lying on form 4473 is a felony and can be punished by up to five years in prison in addition to fines," Senator Charles Grassley said in a letter to Michael Horowitz in the Office of Inspector General. "I request that you initiate an investigation into these matters and that you specifically examine whether Mr. Gillett was the purchaser as indicated by these documents, why the forms list multiple, inaccurate residential addresses while purchasing the weapons, and how the weapon purchased on January 7, 2010 ended up in Mexico."

 Gillett's gun was found in Sinaloa after the gun battle. Investigators found a weapon similar to an AK-47 and some 50 bullets next to her body. Another weapon found at the crime scene was traced to a Uriel Patino, who illegally bought more than 600 guns and is a main suspect in the controversial Operation Fast and Furious run out of the Phoenix office of the ATF.

Gillett has declined all interviews, although he later admitted to later selling the gun on the Internet. 

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