FBI says video uploaded by James Reardon to social media showed he had access to weapons and posed a threat to a Jewish community center in Youngstown

Anti-Semitic materials found at home of James Reardon, 20, who posted a video of himself firing a rifle with a caption about a shooting in Youngstown Jewish Community Center

James Reardon posts video of gunfire and screams, tags it with name of Youngstown community building; police find guns, anti-Semitic and white nationalist propaganda in his home

On his first date with girlfriend Adelia Johnson, shooter Connor Betts, 24, showed her a video of the October terror attack at the Tree of Life synagogue, she says

As US president plans visits to Texas and Ohio after weekend murder rampages, Dayton's mayor says she plans to tell him 'how unhelpful he's being'

After three lethal mass shootings in less than a week, some take more precautions while others remain defiant

Also among dead was a man who helped those with cancer; a mother of two, including a newborn, who was studying nursing; three children left orphaned

At his New Jersey golf course, US president posts messages of support for El Paso and Dayton awkwardly mixed in with those promoting a celebrity fight and attacking political foes

Both Republicans and Democrats call for federal government to take threat more seriously, with some accusing US President Donald Trump of dangerously fanning racial tensions

Authorities say suspect Connor Betts wore bulletproof vest, mask and hearing protection and was carrying at least 100 rounds when he opened fire, killing 9