Mayor Don Iveson sat down in the Edmonton AM studio Monday morning to take Edmontonians' questions, but there was one topic he wasn't able to talk about too much: those Notley-Iveson-Nenshi T-shirts.

Last month, Premier Rachel Notley and Calgary Mayor Naheed Nenshi posed with the shirts, which are emblazoned with a play on the logo of band Nine Inch Nails.

Iveson himself was not photographed.

Mayor Don Iveson offered a laugh but no comment when asked if he had received one of the NIN shirts. (CBC)

On Monday, Iveson had just one word on the topic of the infamous shirts: "infringement."

"We got advice that there were some concerns about the trademark and essentially to cease and desist," he said.

As for whether he received one of the T-shirts, Iveson responded with a laugh.

"On the advice of my attorney, I can't comment."

Calgary Mayor Naheed Nenshi's office says it is not aware of any legal ramifications, and only three shirts were made with no intention of producing on a large scale for retail.