[Born to Conserve]

It was not a robbery, it was “kill the American cop”.

[Sopater]

Col. Camilo Cabana of the National Police said that the taxi Watson was riding in was intercepted by another cab about three blocks from the restaurant. Two men got out and tried to pull the American out of the vehicle, stabbing him three times in the chest and once in the leg, Cabana said.

The assailants abandoned the agent in the street, where he was found shortly afterward by a police patrol. Watson was taken to a clinic several blocks away, but had already died.

Yeah, doesn't sound like a "robbery attempt" in slightest.