Police are looking for a man suspected in a late-night assault causing “extensive injuries” to another man in Toronto’s Fashion District on Sunday.

Around 1:45 a.m., police say a man and three of his colleagues were leaving a late-night establishment in the Bathurst St. and King St. W. area when they encountered a group of men fighting.

The man intervened and was able to stop the fighting, police said. But a few moments later, one of the men in the fight punched him in the jaw “with great force,” for unknown reasons.

The man suffered extensive, non-life-threatening injuries, including a broken jaw, and had to go to hospital.

Police describe the suspect as in his early to mid 20s. He is wanted for assault causing bodily harm.

Anyone with information is asked to contact police at 416-808-1400, or Crime Stoppers anonymously at 416-222-TIPS (8477).