The two former US special forces soldiers have been sentenced to 20 years in prison.
Fernando Alban was arrested last week for alleged involvement in the explosion of two drones during a military parade that was led by President Nicolas Maduro which injured seven soldiers in August.
The country's chief prosecutor, Tarek William Saab, says the two high-ranking military officers are suspected of participating in an attempt to assassinate President Nicolas Maduro in a drone blast earlier this month.
Colombian migration authorities confirmed that Luisa Ortega Diaz and her husband German Ferrer landed in Bogota aboard a private plane from Aruba.
David Vallenilla, 22, was killed after being shot at close range by a military police sergeant, apparently with rubber bullets.
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