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George Koh Image Credit: AP

A British fashion model has been convicted of murdering a more successful rival after a social media-fuelled dispute.

A jury found George Koh guilty on Monday of stabbing Harry Uzoka through the heart outside Uzoka’s London home.

The 25-year-old victim was signed to London’s Premier Model Management agency and had modelled for GQ and Zara.

Prosecutors say Uzoka accused Koh of trying to copy him, and the two men feuded after Koh claimed to have slept with Uzoka’s girlfriend.

In January, Koh sent Uzoka a message challenging him to a fight. Uzoka was stabbed, and collapsed and died in the street.

Koh, 24, had denied murder, saying he was carrying two knives for self-defence.

Two other men were convicted alongside Koh. All will be sentenced on September 21.