I just read this in O Globo, one of Brazil's major newspapers.
I looked for it on Google News and found something about it at Tuscaloosa News:
Colombian police have detained two U.S. soldiers in an alleged arms smuggling plot, Colombian and U.S. officials said Wednesday.
The two U.S. Army soldiers, whose identities or ranks were not disclosed, were arrested during a raid Tuesday on a house just south of the capital, Bogota, where a large weapons cache was discovered, said National Police chief Gen. Jorge Daniel Castro.
A U.S. Embassy spokesman confirmed the arrests and said the embassy "is working to ascertain the facts surrounding the case."