The club acknowledged the abuse despite issuing pre-match reminders condemning discriminatory behaviour.
In a statement released Monday, Leeds also addressed chants referencing Jimmy Savile, stressing that one form of offensive chanting does not excuse another.
“Leeds United Football Club are aware of homophobic chanting which took place during Sunday’s Premier League fixture with Brighton & Hove Albion at Elland Road,” a statement from the club read.
“As was communicated before the fixture, any form of discriminatory chanting has no place in football.
“For this match, extra cameras were deployed in stands and anyone identified in taking part in homophobic chanting will face a lengthy stadium ban.
“The club are also aware of disappointing Jimmy Savile chants, however, this does not make other forms of discriminatory and homophobic chanting acceptable.”