| 1. | Since then Austrians have been alarmed by five waves of letter bombs.
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| 2. | Three more of the letter bombs were found, and all were defused.
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| 3. | They were also reopening years-old cases of letter bombs and anonymous threats.
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| 4. | Most of the letter bombs were addressed to corporate executives or scientists.
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| 5. | Police said the letter bombs received in Germany were mailed from Austria.
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| 6. | The FBI said Sunday that no new letter bombs had been discovered.
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| 7. | The sending of letter bombs during the Operation Wrath of God campaign.
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| 8. | Austria has been plagued by periodic letter bombs for almost two years.
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| 9. | You've worked hard on a letter bomb or a manifesto all day.
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| 10. | In Bavarua, authorities last week warned against possible letter bombs from Austria.
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