The probe pertains to alleged financial irregularities in the Congress-promoted Young Indian Private Limited, which owns the National Herald newspaper.
He has not been issued fresh summons and it is understood that his questioning has ended, at least for now.
The fourth day of questioning was deferred from June 17 to this day after Gandhi requested the agency for postponing the session as he wanted to be with his mother and Congress president Sonia Gandhi in hospital, where she is admitted for post-Covid issues.
Meghan had sued a newspaper publisher Associated Newspapers Limited after the group's tabloid The Mail had printed portions of a handwritten letter that she had sent to her father in 2018, reported CNN.
Britain will unveil new rules regulating press in the country after politicians rejected a proposal for self-regulation by the media industry.