Copenhagen, 15 December (Panos Radio South Asia)--"This is very unfair, unjust!" said a NGO worker as he was returned from the UN climate conference at Bella Centre because there was 'no more space' for him and thousands of NGO workers and activists who had bee queuing up for hours in the chilly weather of Copenhagen.

From today, the UN has placed litmus to the number of observers to the conference. Already the number of accreditation has crossed 40,000 people exceeding the capacity of a maximum of 15,000 of the Bella Centre. 

The high level segment starts from tomorrow, Wednesday. And the number of observers would reduce even further, with only 100 allowed to enter on Thursday and 90 on Friday.

So far there has been no restriction on journalists, who are estimated to be around 3,500 accredited.

"It is unacceptable that civil society observers should be limited in this forum and we hope that the UNFCCC secretariat and Danish government will reverse this undemocratic action," said a joint letter by a group of 50 civil society organizations.

The letter was addressed to Connie Hedegaard, president of COP15 and CMP5 as well as to Yvo De Boer, executive secretary of UNFCCC Secretariat.

Both the leaders expressed deep regret over the limitation of entry, they told media today during a press conference.