The Charity Regulator is being asked to investigate Irish Autism Action over concerns about its funding.
Last week the CEO Brian Murnane revealed the group hasn't written a budget for this year.
While concerns are also being raised about the helpline it provides.
Jacqueline Moran of Irish Autism Mammy's has said they want clarity: “Absolutely do a full investigation in Irish Autism Action.
“What they actually do, where the money is raised has gone and it would be just nice to know who they have actually helped.
“Is it just advocacy?
“We have all raised money for Irish Autism Action, we did it under the idea that the money would go directly to help children and resources.”