A man sexually harassed at Young Labour volunteer through an app after he had been invited to join a Facebook group chat, a source claims.
The alleged harassment occurred during last year's election campaign period.
Labour's General Secretary Andrew Kirton was made aware of the claim on Wednesday and received information about a separate case of alleged sexual abuse within Young Labour in Christchurch. The sexual abuse allegation may involve an underage teenager.
The man has been described by Young Labour volunteers as a sexual predator.
Christchurch East Labour MP Poto Williams said she was unaware of any complaints about the man but confirmed he worked as a volunteer during the election campaign.
Prime Minister Jacinda Ardern encouraged any victims to come forward, but declined to comment on specific allegations because a police investigation and an independent investigation were under way.