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

Partial email message body: I write you to inform you that my recruited person carried the explosive device (Tetryl) into the building where your business is located. It is assembled according to my instructions. It can be hidden anywhere because of its small size, it is impossible to destroy the building structure by this bomb, but in case of its explosion there will be many victims. My man is controlling the situation around the building. If he sees any suspicious activity, panic or emergency the device will be exploded._x000D_ I can withdraw my mercenary if you make a transfer. You transfer me 20.000 dollars in Bitcoin and the device will not detonate, but dont try to fool me -I ensure you that I will withdraw my recruited person only after 3 confirmations in blockchain. _x000D_ _x000D_ Here is my BTC address - 161JE4rHfvygXUVLya8N2WFptjwon2172t