They were looking into that possibility, it hasn't been confirmed as part of this arrest. We may get the story wrong in a big way if were not careful. As far as I know Jo's parents were told at 6 a.m an arrest had been made, no location was given either. :waitasec:
Scaffolding is being erected at the back of 44 Canynge Road now.
But still, police alluded to CCTV footage and a carrying bag in the front seat on the well lit bridge. That sounds like a breakthrough in the case ... and the other pieces fit.