The Petri Gerdt reference article from the English Wikipedia on 24-Apr-2004
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Petri Gerdt

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Petri Gerdt, the 19-year-old chemistry college student suspected of making and planting the explosive device that killed him and six others Friday evening October 11, 2002 outside a McDonald's restaurant in the mall in Vantaa, about 10 miles north of Helsinki. Gerdt acted alone and ruled out any links to terrorist groups.

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