Who knows if it's come to an end.
All they know is that they have a body burned so badly they can't identify it. Not one cop on the scene actually saw him - they are taking it on the word of a cop in the hospital that it was him.
And, oh yeah, there is a trail in the snow behind the cabin leading out into the woods. And this part of California is meth lab heaven so there could be any number of reasons for someone up there who is not Maniac Cop to have run from an army of police goons.