These witnesses also told police that Burke had been experimenting with explosives and had shared with them his plan to blow up multiple trucks where McKinnis worked so that it didn't look like McKinnis was being targeted, according to court records.
Also on Tuesday, police received a call of another pipe bomb, similar to the bombs found Monday, near SW 26 and Portland Ave. It was in the front yard of a home.
Burke was arrested later Tuesday and told police he made and placed the explosive devices with the intent to seriously injure or kill McKinnis, according to records.
When police searched his car, they found love letters to McKinnis's wife, along with a handwritten list of materials used to make devices, diagrams of explosive devices and notes about placing an explosive device in a fuel tank, according to records.