The press ombud has ordered the Sunday World newspaper to apologise to finance company Musa Capital for causing it "unnecessary harm".

The weekly Kuli Roberts column in Sunday World will be discontinued with immediate effect, the newspaper's editor said on Monday.

Newspaper columnist Jon Qwelane on Wednesday at a public forum organised by the South African Human Rights Commission refused to apologise for calling a former colleague a "coconut" for objecting to a recent, blacks-only Forum of Black Journalists event. The forum discussion was frank and at times heated.