Arizona prosecutors in recent weeks issued grand jury subpoenas to multiple people linked to Donald Trump's 2020 campaign, a sharp acceleration of their criminal investigation into efforts to overturn Joe Biden's victory in the state.

The new steps, first reported here, are a sign that Attorney General Kris Mayes, a Democrat, is nearing a decision on whether to charge Trump's allies in the state, including GOP activists who falsely posed as presidential electors in December 2020.

Six people were granted anonymity to share these details about the ongoing investigation.

The attorney general's office declined to comment.

It was not clear whether Mayes is considering charges against people close to Trump's national campaign, or whether her investigation remains focused on the Arizona GOP officials and activists who aided Trump's bid to overturn the state's presidential results. In November, Mayes told CNN that the investigation is "robust."