A hearing continues today in Nauru challenging the legality of detaining asylum seekers on the island.
400 asylum seekers are living in an Australian-run camp on the island as part of Canberra's offshore processing deal with the Nauru government.
Judge John von Doussa is hearing an application for habeas corpus in the Nauru Supreme Court.
A Nauru government statement says the court heard evidence yesterday from an asylum seeker and two Salvation Army staff who gave statements on the centre's treatment of asylum seekers.
The centre's security manager was questioned about security arrangements at the centre.
Nauru's Secretary for Justice Lisa Lo Piccolo was also questioned over visa conditions and resettlement arrangements for asylum seekers.
The judge has continued an order suppressing the identities of all defendants.