Not certain as the article is the extent of my knowledge... but it's possible they connected with someone on here and something on the side occurred... but guessing whatever happened the selling party did the right thing and got ATF involved, or maybe they will be looking for them next... or...
https://sports.yahoo.com/canadian-man-arrested-cumming-gun-010400387.html
Close to home... Canadian man arrested in Cumming in gun smuggling case
15 in total - 13 taurus and 2 glocks