Police are searching for the machete-wielding men who started fighting on a main road in Bolton.
Officers were called to Blackburn Road, Bolton, at around 8.20am this morning, April 29.
Witnesses had reportedly seen a fight among a group of men, armed with machetes.
Police rushed to the scene, but the men had scattered before officers could arrive.
Two of the men were spotted leaving the scene together in a blue car.
Inspector John Walsh, of GMP's Bolton district, believes this is an "isolated incident", and there is no need to worry if you live nearby.
He said: "This is clearly a shocking incident for any onlooked to witness or hear of and we would like to reassure the local community that our early enquiries indicate this is an isolated incident.
"We are taking this incident very seriously, and following all lines of enquiry to identify those involved.
"This was a busy time of day and we are hopeful that there are a number of people who may have witnessed this incident or have information that could help police in completing our enquiries.
"Anyone who has witnessed anything suspicious in these areas, we would urge them to get in touch with us as soon as possible."
If you have information relating to the fight, or know who may have been involved, you can contact the police by calling 101, quoting incident number 0504 of 29/04/2021.
Alternatively, the independent charity Crimestoppers can be contacted anonymously on 0800 555 111.
Reports can also be made via the Greater Manchester Police website.