Help with my tax evasion?

So in 2000 I sold a house for an estimated price of 1 million US dollars. I evaded my taxes and I thought I would never have a problem with it. Two days ago I got a notification that cited me to go and give account of my tax payments of 2009. This is because in 2009 I had a problem with taxes that is not really relevant. However, I am really scared that during my citation of my "2009 problem" the fact that I evaded taxes for 1 whole year in 2000 will be discovered. Can they still punish me for evading taxes even though it was 11 years ago? Please help, I can't even because of the horror it provokes me.