The bench said that according to a medical board report, she is unfit to depose as a witness before the court, as she cannot travel and asked the special CBI court hearing the 2G case to appoint a commission to examine her in the case in Chennai where she resides.
"We are satisfied that the purpose would be served by appointing a commission to examine her in Chennai," the bench said.
Earlier, the apex court had on July 10 directed the AIIMS director to constitute a medical board, to examine whether Ammal is medically fit to depose as a witness before the special court.
Karunanidhi's daughter and DMK MP Kanimozhi and Sharad Kumar, MD of the TV channel, are also facing trial in the case along with former telecom minister A Raja, DB Realty Ltd MD Vinod Goenka and others.
The bench passed the order on a plea filed by Ammal's daughter Selvi seeking court's direction to exempt her mother from appearing before the trial court as prosecution witness on medical ground.