AUSTIN, TEXAS — An unexploded package found on Tuesday could help investigators in their search for a suspected serial bomber. <br /><br />A string of explosions in Austin has left two dead and four injured.<br /><br />A fifth parcel bomb detonated shortly after midnight on Tuesday at a FedEx center in Schertz, Texas, when the package went off on a conveyor belt, injuring one person. <br /><br />Later Tuesday morning, a second suspicious package was found at another FedEx facility near Austin and was "disrupted by law enforcement," according to CBS News. <br /><br />FBI officials say the package "contained an explosive device," while emergency dispatch audio reported there were nails and metals in the parcel. <br /><br />The FBI said in a news release on Tuesday that all six packages were connected. There have been three types of bombs used: hand delivered, tripwire and delivered.<br /><br />Investigators will now study the unexploded device to look for clues and signatures that could help lead to the bomb maker.
