This happens more often than you'd think. My favorite is when Islamic fundamentalists tried putting bombs in 55 gallon drums, and drift them into ports and beaches. Ended up killing quite a few of their own, and exactly 0 other persons. EOD had to blow up a few on beaches, twas about it.
People think I'm insane for not thinking Islamic fundamentalism is zOMG "clash of civilizations" that makes the Soviet Union look like a picnic party.