We’re awaiting a statement from AG Merrick Garland currently scheduled for 2:30 p.m. eastern.
Presumably this is about the incident in Cincinnati though officially there’s no word on the subject. But conceivably there will be some reference to the search at Mar-a-Lago if today’s incident appears tied to the Monday search. Again, this is just speculation: there’s no word about what it’s about.
Late Update: CNN reports that this will be about the Mar-a-Lago search.