UPDATE: We now hear that one employee at the mine died in the attack, another was injured. The vehicle in which they were travelling came under fire just outside of Buriticá.
UPDATE2: The first local news report on what happened, here. Spanish language. Translation:
The criminal incident occurred against two engineers in the Mine Training and Control department (of Continental Gold), who were attacked by gunfire from the high point of the mountain when travelling in a truck.
During the crime committed just outside the Buriticá urban area, while travelling to the mine site in order to start their shift, the engineer Óscar Alarcón, 27 years old, died while his colleague Jorge Armando Tarra was injured and transported to a hospital in Medellín. The other people who were in the vehicle were not injured.
Police are pointing the finger at the Clan del Golfo as potentially behind the attack, this is the ultra-right wing paramilitary group that has previously operated in the zone. We should stress that this is only a hypothesis at the moment, though.
UPDATE3: Probably just coincidence.
UPDATE4: CNL.to published its NR on the incident, here.