Britain's Daily Mail has apologised to George Clooney over a story that claimed his fiancee's mother opposed the marriage on religious grounds.

Clooney is engaged to London lawyer Amal Alamuddin, who comes from a family of Druse - adherents of a monotheistic religion based mainly in Lebanon, Syria and Israel.

The Daily Mail, citing unnamed sources, reported that her mother Baria Alamuddin wanted her daughter to marry a Druse man.

Clooney called the story “completely fabricated.”

The Daily Mail said on Wednesday that the story had been “supplied in good faith by a reputable and trusted freelance journalist.”

But it said in a statement that “we accept Mr. Clooney's assurance that the story is inaccurate and we apologize to him, Miss Amal Alamuddin and her mother, Baria, for any distress caused.” - Sapa-AP