three glock handguns and an ar-15 assault style semiautomatic rifle. the glocks he purchased legally. it is not clear how he obtained the ar-15. investigators also recovered a shotgun from bowers' car. >> we continue to conduct interviews, scrub social media, review possible surveillance camera video and exploit digital media to determine how and why bowers committed this terrible act. >> reporter: bowers' social media reads like a road map of hate and murder. he was particularly concerned about the caravan of central-american migrants and appeared to key on reporting from fox news, right wing social media and highlighted by president trump's own tweets that middle easterners may be mixed in with the migrants. all claims without evidence. bowers reposted this anti semitic view on immigration on his gab.com account on october 4th. open your eyes, it's the filthy, evil jews bringing the filthy,