talked to atf agents and investigators who tell us as they are typically sold illegally online, at fleamarket, and even shipped around the state or to south america. the atf is offering a $10,000 reward for anyone with information that could lead to an arrest in this case. detect say they are following some strong leads on who might be involved in this case this morning. we're told anywhere from 8 - 12 suspects could've been involved in this whole heist. when you see the surveillance there were so many people involved that it had to be well thought out.>> they sell a lot of high-powered rifles, full rifles as well so a lot of concern there. >>> now special coverage of cuba mourns castro. cubans flocked by the hundreds of thousands to bid a final folwell to fidel castro -- farewell to fidel castro. we will report from havana. >> reporter: by some estimates more than 1 miio come here to revolution plaza for an official service for fidel castro. >> [ video playback ] >> he is a blogger from cuba and lives in havana who told me for him and many others, this is a special night. >> it is absolutely