Donald Grewar is being questioned by Ukip party officials over comments that appeared to endorse homophobic beliefs.
The Welsh Ukip candidate posted on a British National Party website, commenting approvingly on a post that described gay people as “fascist perverts” and “paedophiles”.
Meanwhile, in other Ukip news:
A former Ukip parliamentary candidate and election agent is to face a second trial over allegations of electoral fraud.
Matthew Smith was cleared on Tuesday of seven counts relating to forged signatures on nomination forms submitted by the party in the 2013 Norfolk county council elections.
Jurors at Norwich crown court said they were unable to reach a decision on the final two counts of making a false statement in nomination papers.