The source did not say who may have purchased the materials.

CNN: Denver apartment searched in terror probe

And now some Chinese manufacturers are benefiting from those materials they purchased at lower prices.

FORBES: China Will Meet Official GDP Target

If new instructional materials are purchased, I question to verify they are available in both languages.

WHITEHOUSE: It Takes Heart to Succeed

The FBI is also looking at locations in the Denver, Colorado, area where bomb-making materials may have been purchased, a law enforcement source said.

CNN: Afghans were targets of New York terror raid, source says

The Reserve Bureau has purchased hundreds of thousands of tons of strategic materials despite flagging industrial demand.

FORBES: Heads Up