Police in Co Londonderry who stopped a suspicious male carrying a red Santa sack discovered that the 'gifts' he was bearing were suspected stolen goods.
And when the officers from Coleraine's neighbourhood policing team searched the man's home address, they found more than £1,000 worth of suspected stolen items.
However, the police were quick to reassure youngsters that Christmas was not going to be cancelled because of Father Christmas being behind bars.
The PSNI said on Facebook: "The neighbourhood policing team stopped and searched a suspicious male carrying a red Santa sack in Coleraine town centre.
"As a result of this, a large quantity of goods were recovered, and a follow-up search of his home address revealed over £1,000 of suspected stolen goods.
"A note to all those children aged nine months to 99 years who may be a little worried: this was not the REAL Santa Claus."
And someone commented on the PSNI Facebook post: "That's why he's sometimes referred to as Saint Nick!"