i doubt they could do anything to u as u only designed the website and didnt know what his purpose was, etc.

something similiar happened to me at school. i did a site for my cousin and on there he had a rap song which was a diss track towards a nearby school. the song then spread and the other school's principal complained. so my cousin got kicked out of the school and i was about to get kicked out as well but i had nothing to do with the content i just designed it for him so they let me stay.