The company said Cho Seung-Hui, who also killed himself, did in recent months buy empty ammunition clips and a gun holster on eBay. He also sold other items including books and tickets to sporting events.

“Empty ammunition clips and gun holsters are unregulated items that can be legally bought and sold on eBay as well as in retail stores across the US. However, we are saddened that Mr. Cho purchased on eBay any item that may be linked with his actions last week,” the company said in a statement.

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