Singh said it cannot be denied that the accused in the Mecca Masjid and Samjhauta Express blasts were related to right-wing organisations like the RSS.
"The list of 10 names which have come up as the accused in the Mecca Masjid and the Samjhauta Express blasts have been associated with the RSS at some point," he told reporters here.
"Nobody can deny that," he said, adding that there are statements by witnesses to prove this.
Shinde had referred to "Hindu terrorism" and "saffron terrorism" during the Congress conclave in Jaipur Sunday.
"After investigations, we have seen that be it the BJP or the RSS (Rashtriya Swayamsevak Sangh), their training camps are promoting Hindu terrorism. This is a matter of concern. We are keeping a strict eye on it," Shinde had said in his speech.