Arizona Attorney General Kris Mayes (D) assigned a team of prosecutors to the case in May, and investigators have contacted many of the pro-Trump electors and their lawyers, according to the two people who spoke on the condition of anonymity to candidly describe the probe. Investigators have requested records and other information from local officials who administered the 2020 election, the two people said, and a prosecutor has inquired about evidence collected by the Justice Department and an Atlanta-area prosecutor for similar probes.

It is unclear if the investigation will broaden into other attempts to undermine President Biden's victory in the state, including a pressure campaign by Trump and his allies to thwart the will of voters and remain in office.

Dan Barr, Mayes's chief deputy, said the investigation is in the "fact-gathering" phase. He declined to say whether subpoenas have been issued and which state statutes the team thinks might have been broken.