Police are appealing for information after a man was hit with a bottle and left with serious injuries in Standish.
At around 7pm on Thursday, March 9 police were called to reports of an assault on Church Street.
A 21-year-old man was driving down the street when he saw five men emerge from an alleyway by a pub.
Concerned that the group was fighting, the victim stopped and got out of his car.
At this point, he was hit in the face with a large bottle. Shocked and bleeding heavily, he got back in his car and drove away, seriously injured.
Detective Constable Kevin Telford of GMP's Wigan Borough, said: "This man was trying to help break up a fight, but was left with serious injuries on his face and a broken tooth as a result of his bravery.
"At this time, it is likely that a lot of people would have been in the area, so anyone who may have seen something is encouraged to come forward."
Anyone with information should contact police on 0161 856 7292 or the independent charity Crimestoppers, anonymously, on 0800 555 111.