According to LE he only has one scar: a very faint one on his stomach. Other than that, he has no scars or tattoos.
When you have a scar like that, there wouldn’t be any beard growth in that area. The skin is too hurt to produce any hair follicles. I also would be surprised if the coroner didn’t shave him to look for moles/scars/etc. But I guess you never know... Regardless, I just feel like they would have noticed a hairless area in his beard while examining him, even if it was covered by surrounding hair.
The scar seems too severe to be one that would completely fade over time and he was found relatively fast after he died so I don’t think he would have been that severly decomposed. As I mentioned above, they were still able to tell he had a faint scar on his stomach so decomposition could not have been that bad.
I also cannot see anything resembling a scar in this beardless picture of him, though I admit it’s not the best picture to zoom in on.
ETA: comparing both pictures also shows that they have very differently shaped ears.