It just happened while I was riding. I never crashed on the bike. I think there must have been a crack and then I rode off a curb or something and it finally let go. The bike just started to feel weird while I was riding it, when I backpedaled it felt spongey and when I hit a bump it felt kind of grindy and weird. Malcolm at Biseagal repaired it for me. Actually he rewelded both seat stays, he said that on this particular Mielle model there was not a large enough contact area for the seat stay welds. His father-in-law had the exact frame and it broke in the same spot. He put some nice beefy welds on there and so far so good. Here's a couple of crappy late night pics that I just took now. The bike is dirty and the light is crappy. I will take a couple of nice pics with natural light and post them in the pictures section one of these days.