Warren and Donna Pett from Mukwonago were dairy farmers who made missionary work their life.
The Petts and one of their students were shot Thursday, March 18 when armed men raided the technical college where the Petts were teachers.
Police in Uganda say they have detained one of the seven men suspected in the attacks and are investigating a possible religious motive. 90% of the area were the Petts were serving is Muslim.
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