The country singer took to social media to clear the air over the tweets, which were made from 2009 to 2011, and to assure fans that he was deeply sorry for offending anyone.
"Everyone knows comedy has been a major part of my career and it's always been out there for everyone to see. That said, anyone who knows me also knows I have no tolerance for hate of any kind or form."
Shelton added, "Can my humor be inappropriate and immature? Yes. Hateful? Never. That said I deeply apologize to anyone who may be offended."