'X Factor' judges argue over Laura White

X Factor judges Cheryl Cole and Simon Cowell have clashed once again over Laura White's departure from the show.

Cole had previously accused Cowell of voting tactically when he chose to send home White rather than Ruth Lorenzo earlier this month.

White's elimination followed her performance of 'Endless Love' in a Mariah Carey theme night.

Speaking on The Xtra Factor last night, Cowell claimed that Cole's "rubbish" song choice had resulted in her act's downfall.

"We've already lost a great singer when we lost Laura because she had a rubbish song that week," he told show host Holly Willoughby. "That was why she went, it wasn't because she was a bad singer."

Cole quickly denied the suggestion, insisting: "It's not, it's because you voted her off."

Standing firm, Cowell replied: "She was in the bottom two. You don't vote people off if they're in the top two."

As Cole stuck her tongue out at Cowell, he told her: "That just about sums you up - childish."

Louis Walsh also blamed Cole for White's departure earlier this month, claiming that the song choice had been a "disaster".