BiO.

I had once the same "problem", but with hemp seed. I actually had even autoclaved it in the press. cooker for 45 min. The interesting thing was, that the seedling didn't grow bigger or changed with time. So I think what happened was the following:

I soaked the mixture for 24 hours before sterilizing. That soaking-time was long enough for the hemp seeds to germinate. After they germinated I autoclaved them, without noticing the germiantion.
BTW the jars didn't contaminate.

Are your seedling growing? If yes, then you didn't sterilize correctly and you'll get probably Bacillus or even a mold contamination. If not, then don't worry to much you still have a chance of success.

Elektrolurch