Nauru police say that 183 refugees arrested after protests on Wednesday were released from custody last night and are on bail.
Superintendent Calinda Blake says they have been charged with unlawful assembly and are now before the courts.
This comes just days after police banned public gatherings of refugees upset at the treatment by Nauru and Australia.
She says some of the group of 183 are facing additional charges.
"Some within the group have charges of serious assault, assaulting of police, damaging property, damaging of police vehicle and obstruction, obstruction of police in the execution of their duty."
Superintendent Calinda Blake says refugees will be allowed to stage public protests as long as they have police permission.
She says they will be allowed to protest in public places on the island in future if they abide by rules that also apply to Nauruans.
"They just need to put in writing where they intend to hold their protest, what time and the number of people, so that police can do, as part of police duties, do crowd control."