ACT police have been left red-cheeked after their Twitter account re-tweeted pornographic photos.

The @ACTPolicing account followed up a series of messages about safe and enjoyable celebrations of New Year's Eve with the promotion of a tweet by "Katie Sanders".

Her message said: "One good thing about winter ... these boots! #ThonglessThursday" and included three photos of a woman naked but for a pair of black furry boots.

It caused some confusion among ACT Policing's followers.

Police later deleted the nude photos from their feed and apologised.

"Thanks to those who brought an untoward tweet to our attention," they said.

"Not sure how it got on our page, but it's deleted and our account is secure."

There are more messages by Katie Sanders containing nude photos on the ACT Policing's favourited tweets page.