The alleged sexual assaults took place on Wednesday, police said in a statement.
There are conflicting reports as to whether the complainants worked as cleaners or waitresses at the village.
Saada was arrested on Friday and is being held in a prison cell - a day before his first fight was scheduled to take place.
Under Brazilian law, suspects can be held for a lengthy period while a case is examined.
The light heavyweight boxer was due to fight Mehmet Nadir of Turkey in the preliminary rounds on Saturday.
Sky News.
