The part about his age is correct. If he was part of the mass killings, he indescriminatly took lives of people of all ages, from the very young to the very old. His age should have no bareing on the topic of his release. If he did it he should face the same fate as those he killed.
Rohani: Nuclear deal achieves Iran's goals (AP)
from the article: Son of convicted Nazi criminal still hopeful his father will return home