Reported to the Internet Storm Center (https://isc.sans.edy) as part of the Sexploition campaigns of summer and fall of 2018

It is my Bitcoin address : 1PcFPuZeEfuCCbdPu69nzUCvzsqu967xNm _x000D_ You have to solve problems with the transaction by the end of the workday, if the working day is over and people start leaving the building the device will explode._x000D_ Nothing personal this is just a business, if you don’t send me the bitcoin and the explosive device explodes, next time other commercial enterprises will send me a lot more, because this is not a one-time action._x000D_ For my safety, I wont visit this email account. I check my wallet every 35 min and after seeing the transaction I will give the command to my mercenary to get away._x000D_ _x000D_ If a bomb blows up and the authorities read this email-_x000D_ We arent a terrorist organization and do not assume liability for acts of terrorism in other buildings._x000D_ _x000D_ ---- end of message_x000D_ received dec 13th 1:14pm central_x000D_ police say that there were other threats like this one in California.

Partial email message body: My man hid a bomb (lead azide) in the building where your business is conducted. It was constructed according to my guide. It is small and it is hidden very well, it is impossible to destroy the supporting building structure by this explosive device, but you will get many victims in the case of its detonation. My mercenary keeps the territory under the control. If any unnatural activityor emergency is noticed the bomb will be blown up._x000D_ I would like to propose you a deal. You transfer me $20000 in Bitcoin and explosive will not explode, but do not try to cheat -I warrant you that I will call off my man solely after 3 confirmations in blockchain network.