Fulton County District Attorney Fani Willis said the investigation is in the very early stages.
Legal troubles in New York and Georgia mount for the former president with his second impeachment trial having gone dark.
The call will reportedly be part of a probe into whether Donald Trump or his supporters broke state laws in trying to overturn his loss.
The investigation follows Trump's call pressuring Georgia Secretary of State Brad Raffensperger to reverse Joe Biden's win in the state.
The ex-president's bombshell phone call urging officials to "find" enough votes for him to win the state will be a key focus.
Yes, it has been an intense week since then, but we had to clear the air.
“If he wants to call me face to face, man to man, I’ll talk to him," the Georgia secretary of state said.
“Lionizing Brad Raffensperger is a bit wrongheaded.” After Georgia’s secretary of state stood up to President Trump on overturning election results, Stacey Abrams pointed out he isn’t exactly a champion of voting rights.
The right-wing channel personality said critics are "bad" for "trying to make this an issue."
The president gets increasingly desperate in the spoof bit on "The Late Show."