OTTAWA — The federal Conservatives say Environment Minister Catherine McKenna needs to repay money paid to a photographer during a climate change conference in Paris last year.

Documents obtained under the Access to Information Act and made available to The Canadian Press by the Conservatives indicate McKenna's department paid a French photojournalist nearly $11,000 to take pictures of the minister and her staff during the COP21 conference.

The actual cost was $6,600 dollars, McKenna said, but her office mistakenly converted that to Euros.