Nauru police have raided the offices of Save the Children workers who assist asylum seekers on the island, seizing computers and mobile phones, Fairfax Media understands.

The Nauru police are believed to have executed a warrant on Saturday on the organisation's offices inside the detention centre, where they seized laptops and phones, and searched the bags of staff.

It is understood the raid may be connected to an article published by Guardian Australia. It referred to an email titled "media on site", in which Nauruan operations manager Berilyn Jeremiah reportedly advised detention centre staff that the Nauruan government would allow Nauruan journalists to enter the detention centre to "reinstate balance" in media reporting.

Foreign journalists must pay an $8000 visa fee to visit Nauru, which is not refunded if the application is rejected. Al-Jazeera has reported that Nauruan officials have "banned all journalists from reporting from the country", however the Nauru government denies this.