A woman has been injured after fighting broke out over discounted televisions at a Belfast shopping centre.
The incident happened at the Westwood Centre in the west of the city. The injured woman has been treated for a broken wrist.
Black Friday - as it is known - is the US discount shopping event that traditionally follows Thanksgiving. But it has gone global, with Irish and international shoppers being offered more bargains than ever.
In the US, there were reports of violence as the frenzied rush for deals turned ugly.
Retailers are promising consumers an early Christmas bonanza with cut-price deals - largely an excuse to boost sales in the run-up to the festive season and shift some older stock.
This year, Black Friday started earlier than ever with some US retailers opening early on Thursday evening.
About 140 million people were expected to shop in the US over the four-day weekend, according to the National Retail Federation there.
