The Boston Globe suspended its columnist Kevin Cullen for three months without pay on Friday after a review found fabricated details and inconsistencies in comments he made in radio interviews and at public appearances about the Boston Marathon bombings.

“Our review leads us to a conclusion that Mr. Cullen damaged his credibility,” John W. Henry, The Globe’s publisher, and Brian McGrory, its editor, wrote in a statement. “These were serious violations for any journalist and for The Globe, which relies on its journalists to adhere to the same high standards of ethics and accuracy when appearing on other platforms.”

Mr. Cullen, part of the Globe team that won a Pulitzer Prize in 2003 for reporting about sexual abuse in the Roman Catholic Church, will work as general assignment reporter for two months before returning to his role as a columnist.

He will also be barred from giving outside broadcast interviews for six months, after which time his appearances will face “heightened editorial scrutiny,” the statement said.