This past April, a number of Venezuelan military dissidents were holed up in neighboring Colombia plotting to overthrow the government of President Nicolas Maduro when they were approached by a group with similar plans.
The second group, mostly civilians, wanted to assassinate Maduro and suggested joining forces. They showed videos of armed drones shipped from Miami and being tested on a Colombian farm.
The military dissidents declined to participate. They found the civilians unprofessional and weren't interested in killing Maduro. Their goal was to capture him and put him on trial.
Two weeks ago, when Maduro was speaking at a military parade in Caracas, drones packed with plastic explosives detonated nearby in a failed assassination attempt. A participant in the April Bogota meeting said in an interview that he believes the people his group met with were the perpetrators.
His group, which included members of all four armed-service branches, was later infiltrated by the Venezuelan security services. Several dozen were arrested, breaking up the most serious attempt to overthrow Maduro in his five years in office. The plan was called Operation Constitution. The man remains abroad.
His theory about who was behind the drone attack is one of several clues emerging about the perpetrators of the Aug. 4 assault.
The government also knows some things about the plotters. It says their financier is Osman Delgado, a Venezuelan living in Miami who is linked to a 2017 attack on a military base. Delgado couldn't be reached for comment.
The government has released audio recordings of what seem to be the attackers on the day of the assassination attempt. The recordings reveal a chaotic group bickering and scolding one another for failing to report in or not speaking loudly enough or announcing that the military ceremony being attacked was underway.