Jeffrey Michael Kelly, 60, was also arrested on suspicion of leaving white powder on political signs in Ahwatukee, according to Tempe police.

Federal agents on Wednesday morning hauled more than 120 firearms, including “machine guns,” out of the Ahwatukee Foothills home of a man suspected of shooting at a campaign office for the Democratic Party three times and posting bags of white powder labeled as poison near political signs.

Jeffrey Michael Kelly, 60, was arrested on Tuesday night near his Ahwatukee Foothills home by Tempe police who, according to court documents, used surveillance footage to find the suspect.