HUMBERSIDE Police arrested three people at the Grimsby Town derby clash with Scunthorpe United on Saturday following an assault.
The game at Glanford Park was marred when a 17-year-old boy from Holton-le-Clay, a 17-year-old boy from Cleethorpes and an 18-year-old Humberston man were arrested in connection with an assault.
The Holton-le-Clay youth was later released on bail in connection with the incident. The other two people were released without charge.
Superintendent Dave Hall said: "This sends out a clear message to those individuals, that this type of behaviour will not be tolerated."
He added: "We will be working hard to locate and stop those people, who are intent on causing trouble before they get chance to spoil things for those true supporters."