WRONG.
The grand jury that has been dealing with the case was in Washington DC.
They tried to make it look legit by claiming that a Florida grand jury was involved in the case at the 11th hour, but that was just window dressing for the case that was being shown to a Washington DC grand jury for months.
And the magistrate that okayed the warrant not only should have recused himself because he was prejudiced against Trump in a previous case, but also he allowed the warrant to be granted even though it was clearly too general in nature. It had to specify the places to be searched and the specific items they were looking for.
The warrant said basically that the FBI could look for anything they felt might be incriminating.