The BBC has apologised for a news report which contained a racist term, with director-general Lord Tony Hall saying "a mistake" had been made in broadcasting it. A spokesperson for BBC 1Xtra said: "Sideman is an incredibly talented DJ".
The BBC was hit with more than 18,600 complaints over the use of the racial slur by its social affairs correspondent Fiona Lamdin, who is white.
The BBC report, which aired on Wednesday 29 July, described an attack on a 21-year-old NHS worker and musician known as K or K-Dogg.
He added the BBC is strengthening its guidance on offensive language.
He said the report had caused "distress" to many, adding: "Every organisation should be able to acknowledge when it has made a mistake". It is important for us to listen - and also to learn.
But after receiving 18,656 complaints, staff voicing their concerns on social media, and the resignation of BBC Radio 1Xtra presenter Sideman over the issue, Hall has intervened.
On the day of the broadcast, a spokeswoman for the BBC said the report related to a "shocking unprovoked attack on a young man".
"Yet despite these good intentions, I recognise that we have ended up creating distress amongst many people".
"I'm happy working with organisations until we all get it right, but this feels like more than getting it wrong".
The apology comes after a Points West broadcast which reported on an alleged racist attack in Bristol last week.
In a further statement on Tuesday, the BBC said: "We believe we gave adequate warnings that upsetting images and language would be used and we will continue to pursue this story".
At the time, the BBC said the victim's family "wanted to see the full facts made public". It later added: "The decision to use the word was not taken lightly and without considerable detailed thought: we were aware that it would cause offence".