Not sure in your State , but alot of states its illegal to relocate predators. Big reason is the spread of disease, you may have done more harm to the fox or other wildlife. If you didn't want to kill the foxs , at least call the State DNR.
Happen here , spread of rabies across the state, from people relocating racoons.
For a fact very wrong thing to do......fox are well know carriers of Rabies. Distemper is another they spread.
Sometime what looks like you save one animal life, you could have killed many more...........
To late for you , but hope others will learn from your mistake.