Jami-Lee Ross discharged from Middlemore Hospital

Jami-Lee Ross has been discharged from Middlemore Hospital after he was sectioned over his mental health.

Mr Ross, who was involuntarily taken into care at the mental health unit on Sunday, left to stay with a friend on Tuesday and is no longer in Auckland.

NZME was told Mr Ross isn't the subject of a compulsory treatment order any more.

Newshub was told Mr Ross is staying with a support person and is doing okay.

"He's safe and sound, and he's resting. He is focusing on getting well and not focusing on politics or anything like that," NZME was told.

Mr Ross says he had a mental breakdown after being accused of sexual harassment by National Party leader Simon Bridges.

He also accused Mr Bridges of pushing him out when he began to speak up about alleged corruption within the party.

A National Party spokesperson told Newshub they had been taking Mr Ross's mental health concerns "very seriously".

That remark comes after former party president Michelle Boag described Mr Ross as "irrational", Mark Mitchell called him "disloyal" and Judith Collins said he was "delusional".

The war of harsh words has mental health experts calling out the party's politicians.

"I don't think it's acceptable to use shaming words around mental distress and mental health issues," says Mental Health Foundation CEO Shaun Robinson.

"We're looking to our political leaders to set an example."