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In 2000, Ludwig was found guilty on five charges related to bombings and vandalism of oil and gas wells in northwestern Alberta. He served two-thirds of a 28-month prison sentence before he was released in 2001.
In January 2010, hundreds of RCMP officers searched his 325-hectare farm in Hythe ,Alta., looking for evidence related to six Encana gas pipeline bombings in B.C. between October 2008 and July 2009.