A US clothing manufacturer has been forced to deny it has links to Irish terrorists.

IRA Apparel has tweeted to say it has 'no affiliation with any terror groups'.

The unfortunate acronym stands for Impact Reduction Apparel, as opposed to Irish Republican Army.

Impact Reduction Apparel is who we are. We have no affiliation with ANY terror groups.

— IRA Apparel (@IRA_Apparel) January 1, 2015

The company actually makes safety clothing for skateboarders, describing itself as "about being aware that pushing ability to extremes tests the parameters of prudence."

We make products that keep skateboarders safe.

— IRA Apparel (@IRA_Apparel) January 1, 2015

Last year Korean car maker Kia faced criticism after it named its new vehicle 'Provo'.