Some of the emails had the subject line, "Think Twice." They were sent from a spoofed email address. The sender claimed to have had an associate plant a small bomb in the recipient's building and said the only way to stop him from setting it off was by making an online payment of $20,000 in bitcoin.
The sender did not claim that a large bomb was planted
( z1 claim :polarity - :ARG0 ( z2 person :ARG0-of ( z3 send ) ) :ARG1 ( z4 plant :ARG1 ( z5 bomb :mod ( z6 large ) ) ) )