A man was taken to hospital on Saturday night after being "left for dead" on a busy Wigan street.
At around 9.45pm on Saturday, emergency services were called to Market Street in Hindley.
Eye witnesses reported seeing a man "unresponsive" on the floor following an alleged assault.
It is believed that the perpetrators fled by car.
Paramedic sent a rapid response vehicle and an ambulance to the scene and a man was taken to hospital but the extent of his injuries is unknown.