Both of these attacks, attributed to the drug trafficking cartels, took place after 10 bombs, placed in nine political offices of the Liberal and Social Conservative parties and in another bank office, exploded early this morning in downtown Bogota.

Choose your answer: based on the paragraph above can we conclude that "The bombs were definitely made by the drug cartels."?

Options are: --Yes. --It's impossible to say. --No.
I think the answer is