Media outlets have asked a judge to unseal the document, which likely offers more detail about the decision to search former president Donald Trump’s residence.

Here’s a look at how the investigation unfolded.

It’s all coming at a time of blistering attacks on the nation’s civic institutions that experts say is worrisome, if not dangerous, for the future of U.S. democracy.

Experts in classified information said the unusual search underscores deep concern among government officials about the types of information they thought could be located at Mar-a-Lago.

FBI Director Christopher Wray called threats circulating online against federal agents and the Justice Department ‘deplorable and dangerous.’

Whether an FBI search of Donald Trump’s Mar-a-Lago residence is a prelude to criminal charges is unknown — especially unclear since other investigations into mishandling of classified information have ended without prosecution or in misdemeanor plea deals.