WikiLeaks document from 2011
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One 24-year-old German of Libyan descent and one 28-year-old from the
Gaza Strip were detained on suspicion of obtaining chemicals that
could be used to make a bomb / suspected of "planning a violent
criminal act" and "suspicion of preparing a serious seditious act of
violence"
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The two were subject of a surveillance investigation called "Operation
Showers"
https:// wikileaks.org/gifiles/docs/33/3366225_re-ct-s3-germany-ct-germany-releases-pair-suspected-of-bomb.html