The Australian Government has announced the first part of an aid package for Manus Island in Papua New Guinea.
Australia is using the centre to house asylum-seekers as part of the Federal Government's new offshore immigration processing policy.
Asylym seekers who arrive in Australia waters by boat face being sent to Manus Island or Nauru to have their claims processed.
The Immigration Minister, Chris Bowen, says the Manus Island package will include road upgrades, renovations to the hospital and more spending on education.
Mr Bowen's spokesman has not revealed what the total aid package will cost.
Calls for changes on Nauru
The Federal Opposition has called for a single manager to be in charge of the offshore detention centre on Nauru.
The Coalition's Immigration Spokesman, Scott Morrison, is visiting the island this week to inspect the facility.
He says he does not agree with Amnesty's view that the detention centre is inappropriate, ill-equipped and inhumane.
But Mr Morrison says he thinks the centre needs to be managed in a different way.
"One of the things I think we need more of here, although there's good collaboration between the various agencies the leadership, it's essential there is no one single agency running the show up here," he said.
"That was something Amnesty also highlighted in their report to me, that is different to how all of the other centres in Australia operate...someone needs to be in control at the end of the day."