Nauru's government says one lawyer has been granted access to the country to represent one of the suspended opposition MPs, but it has rejected the applications of two others.
Roland Kun has appealed the government's decision to cancel his passport, and ongoing procedural delays in the courts for five months have prevented him from returning to his family in New Zealand.
Three other MPs, Squire Jeremiah, Sprent Dabwido and Mathew Batsiua, were charged in connection with a June protest that the government says was a violent riot.
Three lawyers, David Lambourne, Jay Williams and Arthur Moses, have all been admitted to appear for the MPs, but only Mr Moses has had his visa application approved.
Mr Williams and Mr Lambourne's applications were rejected by the immigration minister, David Adeang, who says he has serious reservations about their character.
However, in a post on Twitter, Mr Lambourne said he hadn't even applied for a visa.
The government says it's anticipating another lawyer, Georgina Coleman, to apply for a visa to represent Roland Kun.