Scottish Labour has been criticised for its slow response to allegations a Dundee councillor shared anti-Semitic material online.
Coldside councillor George McIrvine shared a post on Facebook that made reference to the Rothschild banking dynasty, a common target for anti-Semitic conspiracy theories.
Mr McIrvine has removed the material and apologised.
Howard Barclay, who complained to the party about the post in April, said he is disappointed the investigation has still not concluded
He said: “(Scottish Labour leader) Richard Leonard has said there is no place for anti-Semitism in Scotland, and yet when it comes to investigating a clear case that arose it is swept under the carpet.”
In an email to Mr Leonard, Mr Barclay wrote he hoped the delay had not been “so rules can be changed in the Labour Party to allow anti-Semitic imagery being disseminated.”
In his reply Mr Leonard stated: “There is zero tolerance of anti-Semitism by me and no party rule changes to alter that.”
The Labour party has been embroiled in controversy over its attitudes towards anti-Semitism for months.
Last week, the party did not include all definitions of anti-Semitism agreed by the International Holocaust Remembrance Alliance (IHRA) in its code of conduct.
However, MPs and peers voted to “accept and abide” by the IHRA’s definitions on Monday.
Mr Barclay said: “Scottish Labour has an opportunity to take a stand and show to people of Scotland that it does accept the IHRA definition of anti-Semitism, that is stands with our Jewish community and that it does not just follow diktats from London, especially on something as fundamental to Scotland’s value system as this.”
A spokesman for the Scottish Labour leader said: “Richard Leonard has been clear throughout his time as leader of the party that he has zero tolerance of, and that there is no room for, anti-Semitism or any other form of racism in the Scottish Labour Party.
“While this individual case remains under a live investigation it would not be appropriate to comment further.”
Mr McIrvine’s Facebook post stated: “There are only nine countries left in the world without a Rothschild central bank: Russia, China, Iceland, Cuba, Syria, Iran, Venezuela, North Korea and Hungary. Isn’t it funny we are always at war with these countries?”
He said he had intended the post to be a comment on international banking, not the Jewish Rothschild family.
Mr McIrvine said he was a committed anti-racist has has been given the backing of Dundee Trades Union Council.
However, he has been absent from council meetings for several weeks.
It is understood he has also been dropped as branch secretary for the trade union Unison. The union has refused to comment on Mr McIrvine’s situation.