Blue star Lee Ryan has apologised for saying the US terror attacks have been "blown out of proportion".
During a webchat the singer said the killing of whales and elephants was more important than what happened in New York.
Bandmates Simon and Duncan both told Lee to shut up after he made his remarks.
Now Lee says: "I am deeply sorry for what I have said and apologise unreservedly to everyone affected by the tragedy of 11 September.
"I was trying to express my concerns for other issues close to my heart but I realise now I did so in a very foolish and offensive way."
And he told The Sun newspaper he would give his share of the profits from If You Come Back to the charity Twin Towers fund to say sorry.