Radio personality and mental health campaigner Mike King is the target of New Zealand's latest case of online bullying.

A Facebook user posted a message suggesting the comedian hang himself.

Mr King is currently out of the country, but says he wants to speak with the person when he returns to New Zealand.

He says cyber-bullying is totally unacceptable.

Several Facebook and Twitter users have posted messages of support for Mr King.

If you need help or want to talk to someone:
• Lifeline – 0800 543 354
• Suicide Crisis Helpline – 0508 TAUTOKO (828 865)
• Youthline – 0800 376 633