Replying to Motorcycle accident, need help fast!

So, im an exchange student in USA right now, and they just got a call from the grandma in new hampshire saying that the family's uncle were invovled in a motorcycle crash and they didnt know how bad it is. I;ve never met this uncle put the family is pretty torn up about it and the mom of the family is crying.

here is my problem :
I have never met this uncle so should i just go to bed and kind of ignore it.
Or should i go and try to cheer them up even i kind of feel akward doing that?
i know i sound kind of like a dbag, but i feel really uncomfortable if i would try to like to talk with them about it, any suggestions ?