Man held over Democratic office shootings may have planned ‘act of mass casualty’

Authorities say Jeffrey Michael Kelly had more than 120 guns and over 250,000 rounds of ammunition in his home

The man arrested for shooting at a Democratic National Committee office in suburban Phoenix on three separate occasions had more than 120 guns and more than 250,000 rounds of ammunition in his home, prosecutors said, leading law enforcement to believe he may have been planning a mass shooting.

Jeffrey Michael Kelly, 60, has been detained on terrorism charges in connection with the shootings at the Democratic party's campaign office in Tempe, a city just east of Phoenix, on 16 and 23 September. After the third shooting, on 6 October, the Arizona Democratic party was forced to close its office.