There is a section of sponsored images that link back to ports in shutterstock (these are not free). Then there is another section that has ports of images where folks can download the image for free simply by clicking on them.
It is in one of these ports owned by someone going by the name Norasfed where the stolen images are being claimed as his. I have tracked down where several of these images have been used online and credit has been given to this thief for our images.