Federal investigators are confirming a FedEx link to the Texas package bomber. A source tells NBC News the FBI has confirmed the bomber visited a store outside Austin to ship at least two of the devices. One bomb exploded last night at a FedEx facility outside San Antonio, while another was discovered at a FedEx facility in Austin. Sunset Valley police told reporters earlier today whoever visited the store would have gone inside because there isn't a package drop-off outside. Four bombs have gone off in the Austin city limits this month, killing two people and injuring four others.