Martin McGuinness has taken secrets about the Poppy Day bombing in Eniskillen to his grave, relatives of the victims said today.
The November 1987 bomb exploded near the Co Fermanagh town's war memorial ahead of a Remembrance Sunday ceremony, which was being held to commemorate British military war dead.
Eleven people, many of them old-age pensioners, were killed and 63 were injured in the IRA attack. Another victim died 13 years later having never woken from a coma.
Mr McGuinness was once accused in a TV documentary of knowing in advance about the bombing.
Margaret Veitch, whose parents William and Agnes Mullan were murdered in the blast, said she would not gloat over his death.
"But I certainly won't be sending any sympathy card because I got no sympathy card from them (the IRA)," she added.
"I am so sorry for all the innocent victims of Northern Ireland because we will never, never get the true story.
"Martin McGuinness chose to be a terrorist, he chose to go into government, he chose to take the bomb and bullet.
"My parents never had a choice - they died and we will never get justice."
Stephen Gault, who witnessed his father Samuel, 49, being killed, said he could not forgive Mr McGuinness for his terrorist past.
The then 18-year-old was also injured in the blast.
He said he would always remember the former Stormont deputy first minister as a terrorist, not a peacemaker.
"My feelings are with the Enniskillen families," said Mr Gault.
"Martin McGuinness has taken to the grave the truth and the answers that we need to be able to move forward. He knows who bombed Enniskillen. Initially my thoughts and prayers go out to the Enniskillen victims.
"I will always remember Martin McGuinness as the terrorist he was. If he had been repentant my thoughts might have been slightly different. But he took to his grave proud that he served in the IRA. There was no remorse or repentance from him even up to his death."
Mr Gault said he feared that Mr McGuinness would only be remembered as a peacemaker.
"My fear is Martin McGuinness is going to be remembered as this great peacemaker similar to the way Nelson Mandela was remembered after his death. My fear is that his horrific past will not be mentioned.
"People might say I am unchristian that I have no sympathy for his family. But it wasn't Christian to send people out to murder innocent people.
"Did the McGuinness family feel any sympathy for the Gault family when my father was cruelly and brutally murdered at the age of 49 by an IRA bomb?
"I have heard all this talk about how Martin McGuinness was only 66. My father was only 49 when he was murdered. He wasn't even 50. He was a very young man."