The Council on American-Islamic Relations is calling for Republican candidate Ben Carson to drop his bid for the White House after recent comments made about his disapproval of a Muslim president.

The retired neurosurgeon and presidential hopeful came under fire from the civil rights organization after his appearance at NBC's Meet the Press on Sunday. Carson told reporter Chuck Todd that he "would not advocate that we put a Muslim in charge of this nation".

Now the group is condemning Carson, saying he is the one who is unfit to occupy the oval office.

"We really urge politicians, the general public, community leaders and presidential candidates to repudiate his views and we ask Mr. Ben Carson to withdraw from the presidential race because he is unfit to lead and because his views are inconsistent with the United States Constitution," said CAIR executive director Nihad Awaid during a press conference on Monday, the WSJ reports.

Carson, who is a devout Christian and practicing Seventh-Day Adventist, refused to back down from his comments. He told newspaper The Hill on Sunday that he believed Muslims incapable to lead the country because their religion was too entrenched in their daily life. He said that Sharia law was not consistent with the principles of the Constitution.

Despite being often criticized for what could be characterized as anti-Islamic rhetoric, many of Carson's fellow nominees were quick to distance themselves from his comments. Republican candidate Donald Trump played it safe when asked if he would be comfortable with a Muslim president, saying that it was something he would consider though it needn't be addressed now.

Trump himself was recently criticized for not speaking out when a questioner at a rally accused President Obama of being a Muslim.

The Anti-Defamation League also condemned Carson's comments as offensive and un-American. A statement from National Director Jonathan Greenblatt said, "As the campaign season advances, we urge all presidential candidates to avoid innuendo and stereotyping of all sorts, including against people based on their faith, particularly American Muslims and, instead, to confront all forms of prejudice and bigotry."