To date no conclusion can be made as to the contributor to the incident and it would be sub judice to say so.
You have a book coming out about it [written by Daily Beast contributor Diane Dimond, with the Salahis' cooperation].
“Davis needs to run a perfect campaign,” said political strategist Mark McKinnon, who is also a contributor to The Daily Beast.
also contributer, mid-15c., from Anglo-French contributour, from Vulgar Latin *contributorem, agent noun from contribut-, stem of contribuere (see contribution). Related: Contributory (early 15c.).