"I was raised in a culture/crowd where drug addicts were written off as losers, and since that's the narrative I grew up with, it's been hard to change with the times.
"Needless to say, I didn't express myself properly here - I don't shy away from controversy, and angry critics really don't bother me at all. If I think I'm right, I'll throw up a finger and dig my heels in and laugh. But this time, I was not. So, my apologies."
He added a post script at the end saying media outlets had been "quote-mining" things he'd seen in the past to apply it to a new situation, though admitted this didn't make what he'd said "any more tactful".
Results from Prince's toxicology tests are still pending.