The Labour Party are under pressure to investigate a general election candidate who is reported to be be linked with anti-Semitism.
The newspaper reported Ms Carroll personally advised alleged Holocaust deniers.
Ms Collins has denied all of the allegations and said she's "distraught" by the claims, adding "My Dad fought in WW2 helping liberate Auschwitz, and suffered mentally for the rest of his life."
The candidate says she never saw the antisemitic posts, which were not made in the group she was in. She said the group was formed to help members who were blocked from voting in the leadership election and that she left the group when it became focused on antisemitism.
Fiona Sharpe, spokesman for Labour Against Antisemitism, said it was disgraceful not to investigate the Carmarthen East and Dinefwr candidate.
“The refusal of the Labour Party to investigate Carmarthen East candidate Maria Carroll, without even seeing the evidence accumulated by Labour Against Antisemitism and GnasherJew, is a disgraceful decision that again highlights the institutional anti-Jewish racism within the organisation...
We call on senior figures within Welsh Labour, including First Minister Mark Drakeford, to demand that a full investigation be carried out immediately and urge Ms Carroll to step down ahead of the General Election on December 12th.”
The Labour Party say they have not received any complaints about Maria Carroll.
Here's a full list of the candidates standing in Carmarthen East and Dinefwr.
Jonathan Edwards - Plaid Cymru
Havard Hughes - Conservatives
Peter Prosser - Brexit Party
Maria Carroll - Labour