But an executive of the Radio Corporation of Singapore Pte Ltd. which manages the station News Radio 93.8 FM said the human rights group Think Centre which made the claim "got its facts wrong."

Think Centre, which organised the Human Rights Day protest with the Open Singapore Centre, said that when the station first aired the report it featured opposition MP J.B. Jeyaretnam reading a letter to Prime Minister Goh Chok Tong demanding the abolition of the Internal Security Act (ISA).

The report also included a human rights day message by UN Secretary General Kofi Annan and an interview with Think Centre projects director Yaw Shin Leong on the role of youth in Singapore politics.

An hour later the report was aired again with the news presenter saying the management had requested the programme be re-edited, Think Centre claimed in a statement.

"The re-edited version took away any mention of J.B. Jeyaretnam and his letter to PM Goh. UN (Secretary General) Kofi Annan's human rights message was also excluded," said the statement by centre spokesman Jacob George.

It featured an interview with student leader Tang Kong Soon on the hurdles faced by people wanting to express their political opinion was aired, the centre said.

But Radio Corp. of Singapore Pte Ltd. assistant vice president for news radio Rose Tan denied any re-editing took place, saying the first report and interview were not meant to be re-broadcast as the presenter had said.

The second interview, which was aired in full, was intended as a separate segment without the content of the earlier report, she told AFP.

"There was no re-editing as the first interview was not intended to be rebroadcast. The second interview was a separate interview and it went through the normal editing procedure for timing and content," Tan said.

A small group of activists attended Sunday's event at Hong Lim Park, Singapore's designated free-speech corner.