A bar was caught serving around 20 underage young people as the PSNI were carrying out checks to ensure door staff were licensed.
The PSNI in Newry and Mourne district were inspecting a bar to check for Security Industry Authority (SIA) licences at the weekend, but arrived before the door staff came on duty.
Looking around, officers noticed that some of the clientele in the unnamed bar were on the young side. It transpired that around 20 of the bar's patrons were under the age of 18 and four of them were carrying 'rather dodgy' fake IDs.
A PSNI spokesperson said: "The owner of the premises was cautioned for allowing minors on licensed premises and the parents of the young people will be spoken to in due course.
"Please make sure you know where your kids are and who they are with."
The searches were carried out as part of the PSNI's Op Noomin, which has seen them checking door staff across Northern Ireland to make sure accreditation is in order.