Police have issued ten community resolution notices and eight £60 fines after responding to parties at houses in the Holyland in south Belfast in the early hours of Thursday morning.
In one incident a group of young people were discovered hiding in the bathroom.
Police say young people who have moved to the area to pursue their studies, and others visiting the area are not listening to repeated warnings.
Chief Inspector Gavin Kirkpatrick said alongside the universities and colleges, the PSNI has issued multiple appeals for young people to follow the health and safety advice and highlighted the importance of being good neighbours.
“Eighteen of those people we spoke with failed to understand the seriousness of the situation. At one address, we discovered a group of people hiding in a small bathroom. Some received community resolution notices, while the behaviour of others resulted in fixed penalty notices. This follows a series of arrests for a range of offences in the area over recent days,” he said.
He said police will liaise with the universities and colleges who will consider their own sanctions against any students involved.
Chief Inspector Gavin Kirkpatrick added: “Our message is very clear. All students must follow the health and safety advice and specific guidance regarding houses of multiple occupancy provided by the universities: Only six people, from a maximum of two different households, can gather indoors in a private dwelling.
“Students living off campus must also be mindful of the importance of building good relationships with local residents. They must be respectful of their neighbours who do not want to kept awake all night with parties and do not want to have their property damaged.
“Unfortunately residents have been through it all before. What might seem like fun at the time, can often cause others a great deal of upset and distress.
“We continue to work with the universities, further education colleges, our partner agencies, local resident and community representatives to address any antisocial or criminal behaviour in the area.
“We have dedicated substantial resources to policing this area throughout the coming weeks and will robustly address any antisocial behaviour and criminal offences.”