The ATF announced that they have recovered 13 firearms belonging to the Oregon college campus shooter and all were purchased legally. 

Six were recovered at the scene of the mass murder at Umpqua Community College, while seven were found at 26-year-old Chris Harper Mercer's home. 

Salinas Nunes, assistant field agent in charge in the ATF's Seattle division, said all of the guns were purchased in the past three years, some by the shooter and some by his family members.

Nunes said a flak jacket containing steel plates was also found at the scene. There were five extra magazines in the jacket. 

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