So it turns out the small aircraft lost over the Coromoro area of Santander region, Colombia on Saturday was working for a geological surveying company, was carrying two Canadian geols running airborne surveys on the copper property in that location
And that the plane was shot down by ELN terrorists.
UPDATE: The two people in the plane have now been confirmed dead. (photo of the Colombian army at the crash site on that link). IDs of the two dead have not yet been revealed .