Omid, the Iranian man on his 33rd day of hunger strike on Tuesday, continues his hunger strike, as do five Iranian asylum seekers. A number of Hindu Tamils who have been on hunger strike will also be observing a religious six-day fast, advocates said.

Amnesty International's refugee experts will visit Nauru from Monday, November 19, to assess the human rights situation on the ground, and will interview asylum seekers and meet Department of Immigration and Citizenship officials, the Nauruan government, the Salvation Army and health officials.

It follows the Red Cross visiting the camp last week.

Mohammed, an asylum seeker on Nauru, told Fairfax the men had broken their hunger strike at breakfast on Tuesday. He had taken a glass of soup, and felt better than he had in days.

''We have taken the decision to just stop the hunger strike,'' he said. ''I think Amnesty International, when they come here, we hope that when they see the situation and the condition of us, I think they will put the pressure on the government of Australia to just change the policy and they will help us …''

Amnesty International refugee campaign co-ordinator Alex Pagliaro said Amnesty would spend as much time as possible hearing the men's concerns, but could not pre-empt the discussions this week.

''We're happy that the hunger strike has ended, and the men are eating and no longer at risk.''

Omid, the Iranian man on his 33rd day of hunger strike, appeared gravely ill, Mohammed said. ''He says, 'I will not stop the hunger strike.'

''If you see him, you will find him just a skeleton body, 'cause he's too weak. Last time a doctor told him that very soon you will hurt and [your] brain will stop working.''

Refugee Action Coalition spokesman Ian Rintoul called on the government to urgently intervene, saying it was possible Omid's body had already suffered permanent damage.

A Department of Immigration spokeswoman said ''a large group has advised us that they have ceased their protest last night''. She could not say how many people were in the group, but said some meals continued not to be claimed.

Meanwhile, 23 more asylum seekers were sent to Nauru on Monday, bringing the total to 400.

The new arrivals had joined the hunger strike, but abandoned it with the others on Tuesday.

The Amnesty delegation will present a briefing paper on the trip on Friday.

Labor for Refugees called on Tuesday for the United Nations High Commissioner for Refugees to intervene in the Nauru detention camp, writing to the office in Canberra.

''As the organisation best placed to make an urgent inspection of the Nauru camp, we urge you to take immediate steps to send a fact-finding delegation to Nauru, to inspect the Nauruan detention centre, inform the public about the health welfare of the detainees and the conditions there, and to intercede for asylum seekers to the Australian government.''