Police say the arrests were made last week, two days after a male student was robbed during the day by two men, one of whom carried a knife. The robbery took place at the Beta Theta Pi house.
Police say those arrested are not Emory students.
A few days earlier, a male student reported being robbed at the Phi Delta Theta house between 11 p.m. and midnight. He told police the robbers took cash and personal electronic items.