Christchurch city councillor Deon Swiggs has revealed he is under investigation.
Three complainants - aged 13 to 21 - say they have received inappropriate late night social media posts from Swiggs.
In a statement, Swiggs denies any misconduct and says he welcomes a full investigation into any complaints.
He says he felt it important to identify himself to stop aspersions being cast on colleagues.
Swiggs says he will co-operate fully with the inquiry.
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