Whenever I build a website for a third party I always include in my contract a statement regarding copyright and that they accept full legal responsibility for any images supplied.
When i get a graphic designer to do graphics for me, I get them to do something similar (i.e indicating they accept full legal responsibility for images they supply)
Its a good practice to get in to.
In saying that, if you have some form of contract from the designer then check it out and if need be just remove the image but ideally just don't reply.
btw: A good tip to assist in fucking over others stealing your images is to simply embed meta data into them before you publish. Most people stealing them don't think about the meta until they see a nice letter showing how images on there site have your meta data in it. Easy way to win the argument and occasionly get some extra bucks.
When i get a graphic designer to do graphics for me, I get them to do something similar (i.e indicating they accept full legal responsibility for images they supply)
Its a good practice to get in to.
In saying that, if you have some form of contract from the designer then check it out and if need be just remove the image but ideally just don't reply.
btw: A good tip to assist in fucking over others stealing your images is to simply embed meta data into them before you publish. Most people stealing them don't think about the meta until they see a nice letter showing how images on there site have your meta data in it. Easy way to win the argument and occasionly get some extra bucks.