The suspect was also arrested for allegedly hanging suspicious bags of white power from political signs lined with razor blades.

The man arrested in connection to a shooting at the Democratic National Committee’s (DNC) field office in Tempe, Ariz., may have been planning a mass casualty event, Maricopa County prosecutor Neha Bhatia said in court Wednesday,

An Arizona prosecutor says the man arrested in the three-time shooting of a Democratic campaign office had more than 120 guns and over 250,000 rounds of ammunition in his home

Authorities in Arizona say a man arrested in shootings targeting Democratic campaign offices near Phoenix had more than 120 guns and apparently had been plotting a mass casualty event.

Arizona investigators surveilling the man accused of shooting at the Democratic National Committee office in a suburb of Phoenix saw him posting political signs with bags of a white, powdery substance attached,

Police investigating a series of shootings a Democratic National Committee office in Arizona found more than 120 guns, 250,000 rounds of ammunition and a grenade launcher at the home of a suspect, according to the local attorney’s office.

Police found a huge stash of guns and ammunition in his home, leading prosecutors to believe he was was planning a "mass casualty" event.