University students in Belfast have been warned against repeating the drunken violence witnessed on St Patrick's Day last year.
The University of Ulster said action would be taken against students engaged in anti-social activities during this year's celebrations.
This comes after riot police were called to deal with drunken gangs that thronged the streets of residential areas of south Belfast last year.
A letter sent to students by the university authorities warned of the consequences of unruly behaviour.
"As a University of Ulster student, you should be aware that you are a representative of the University both on and off campus, and carry with you the good name and reputation of the University," the letter said.
"It is a regrettable fact that anti-social behaviour by some students has, in the past, tarnished the good name of the University and its student body".
"In particular, St Patrick's Day 2009 saw disgraceful scenes on the streets of south Belfast which resulted in criminal convictions for some students as well as disciplinary penalties for others."
The letter added: "We do not wish to see a repeat of those scenes this year, and will act swiftly against any of our students identified as bringing the University into disrepute through their behaviour."
Students were further warned of their commitments under the charter overseeing conduct.
The letter made it clear any anti-social behaviour may result in disciplinary action.
© UTV News