Police have arrested a man suspected of shooting up a Democratic Party office in Tempe on three different occasions. Here's what to know.

Jeffrey Michael Kelly was arrested Tuesday and charged with 10 counts including committing a terrorist act. The FBI was searching his home on Wednesday.

A 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.

Jeffrey Kelly is detained for shootings at a DNC office in Phoenix; an arsenal of weapons was found at his home.

TEMPE, Ariz. — A 60-year-old man suspected of shooting at a Democratic National Committee office over the last two months and hanging suspicious bags of white powder from political signs in a nearby village had over 120 guns and over 250,000 rounds of ammunition in his home and was preparing for a "mass casualty" act, according to prosecutors.

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.