A massive brawl took place on Blackburn Road in Accrington near to the junction with Swiss Street last Saturday night (6th Ocotber 2012) at around 10pm.
All the men involved are described as Asian and police are appealing to anybody that witnessed the fighting to come forward.
Detective Inspector Jill Johnston said: “This was an incident of large scale disorder that involved between 15 and 20 Asian men fighting in the middle of the street, to the extent that they brought traffic to a standstill for a number of minutes.
“The motive for the fight is not known at this time but we do believe that all the men involved were known to each other.
“I’d ask anyone that was in the area that witnessed the fight or with any information that could assist with our investigation to call Lancashire Police on 101.”