Published: Oct 09, 2013 1:17 PM EDT

MIAMI (AP) - The United States Southern Command says a U.S. Airman from Florida was killed in a plane crash in Colombia while tracking a suspected smuggling vessel.
Air Force Master Sgt. Martin Gonzalez of Miramar was one of four killed on Saturday when the twin-engine turboprop crashed near the Panamanian border. The 39-year-old is survived by his wife and two children.
Also killed were two American defense contractors and Panamanian National Air-Naval Service Lt. Elroy Nunez. Two U.S. contractors on the plane who were rescued by Colombian military forces remain in stable condition in a hospital in Bogota.
The crash is being investigated.
Southcom says the plane was contracted to provide detection and monitoring of drug trafficking routes in the coastal region of Central America as part of Operation Martillo (Hammer).

(Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)