Yes, one article said there were fingerprints and that they were testing the body and clothing for DNA evidence. I think it was the same source that said they had surveillance footage of the route they took. They may not have confirmed it was them, but believe it was the suspects based on the timeframe. There has also been a lot of misinformation so it's hard to tell what is fact. I think it was the same article in which LE said they were looking for criminals that had been recently released from prison? Maybe the DM? Anyway, they seem to think the four involved have a criminal history.I wasn't aware that they left fingerprints behind?
I also wasn't aware that LE knows anything about the route they took when they left, unless you're referring to the car and the motorbike caught on cctv driving along the road at around the time it's estimated that they left? I didn't think LE had conclusively linked those vehicles to the crime?