Here's one: https://en.wikipedia.org/wiki/Omagh_bombing https://en.wikipedia.org/wiki/Omagh_bombing Two: https://www.justice.gov/archive/usao/nye/pr/2012/2012n

Here's one: https://en.wikipedia.org/wiki/Omagh_bombing https://en.wikipedia.org/wiki/Omagh_bombing Two: https://www.justice.gov/archive/usao/nye/pr/2012/2012nov08.html https://www.justice.gov/archive/usao/nye/pr/2012/2012nov08.h... Three (not sure if the caller was the one planting the bomb here): https://www.theguardian.com/uk-news/2015/may/01/bomb-aimed-at-police-patrol-found-in-north-belfast https://www.theguardian.com/uk-news/2015/may/01/bomb-aimed-a... Probably not super common but it does happen from time to time. And imagine ignoring a bomb threat and then it's real, you probably would not want to be responsible for that.