Maria Carroll said she had not seen the relevant social media posts and would have “immediately condemned them”
A Labour general election candidate has been referred for an internal party investigation over anti-Semitism allegations.
Maria Carroll is accused of previously running a Facebook group that included people alleged to have made anti-Semitic comments.
First Minister Mark Drakeford said he was “concerned” about reports in the Mail on Sunday regarding Ms Carroll.
She said she had not seen the relevant social media posts.
Ms Caroll, the Welsh Labour candidate for Carmarthen East and Dinefwr, added that she would have “immediately condemned them” had she seen the comments.
The Facebook group, whose contents are only available to group members, was reportedly set-up in order to advise Labour members subject to internal party disciplinary investigation on how to defend themselves.
Ms Carroll said: “I joined that group when left wing members were being suspended from the Labour Party en masse to prevent them from voting in the 2016 Labour leadership election, for incidents as small as retweeting [former Green Party leader] Caroline Lucas.