AN SNP selection race marred by accusations about the conduct of the incumbent MSP has entered further turmoil as challengers refuse to take part in hustings.

Long-serving Cunninghame North MSP Kenneth Gibson is seeking re-selection.

But former MP Corri Wilson and ex-SNP aide Osama Bhutta are both standing against him.

The selection process was paused last week amidst an ongoing row over allegations about Gibson's conduct.

Claims from 21 people were sent to party officials last year and were made public last month.

It's understood that a probe has now begun, focusing on claims of "bullying or harassment", particularly directed at women party members.

Ballot papers are to be sent to local branch members this week and hustings, which were pulled by party decision-makers after a complaint about potential favour to Wilson and Bhutta, will take place this afternoon.

But The National has learned that neither challenger will take part.

In a joint statement sent to party members, they said they "cannot appear on a platform with someone who is facing such serious allegations".

The statement reads: "As candidates we are committed to a robust and fair selection process and stand ready to answer any and all questions members wish to ask. However, this contest takes place in the shadow of bullying and other serious allegations.

"SNP HQ has commissioned an external law firm to look into these allegations. Our preference was that this was concluded before the contest took place so that potential victims could receive redress or accused parties could clear their name.  While this process is active and live, it is inappropriate, in our eyes, for hustings or indeed the process to go ahead."  

It goes on: "We will therefore not be attending in protest."

They pair say they have set up "alternative forums" to take questions from members, adding: "We are available to you and are committed to working towards healing the divisions and hurt in the constituency."

Gibson, who has the backing of Health Secretary Jeane Freeman and endorsements from former Equalities Secretary Angela Constance and others, has been contacted for comment.

The SNP said: "We do not comment on internal party matters."