MSNBC Dateline Extra November 28, 2019 20:43:00
>> reporter: on august 15th, 2011, 30 days after row ber toe ayala's death, investigators received in the mail this hand-drawn picture of a bomb. what did you think when you saw that diagram? >> shock. >> we were amazed. absolutely amazed. i had never seen anything like that before. >> reporter: the device, as shown in the diagram, was a two-inch pipe bomb. placed next to a one-liter soda bottle full of gasoline. spray painted black. a large bolt tied off with a fishing line and acting as a drop weight would fall on a rat trap, causing it to strike a firing pin. kind of like a goldberg device....
Source: archive.org