England's most senior police officer involved in football has admitted that there is still a serious problem of not reporting offensive chanting at matches.
DCC Andy Holt, National Policing Lead on Football Policing, is featured on a Channel 4 investigation which is broadcast tonight (Monday).
The undercover programme reveals that around 20 incidents of homophobic abuse have occurred across three Brighton & Hove Albion fixtures alone.
Brighton have made numerous complaints in the past to the Football Association in an attempt to stop the chants from rival supporters.
The show also investigates other incidents including racist and anti-Semitic abuse involving fans of West Ham United, Chelsea, Wigan Athletic and Millwall.
"I can clearly see that there's some inappropriate behaviour going on, some of which may well merit an arrest. It could well be that nothing has happened and if that is the case then that is disappointing," Holt said.
The Crown Prosecution Service and the Association of Chief Police Officers announced at the start of the season that fans would face prosecution if they were found guilty of abuse on social media.