One Nation candidate apologises for 'unacceptable' comments, steps down

One Nation's candidate for Melbourne has quit and apologised over his past comments just four weeks out from the Victorian state election.

Matthew Collins resigned after it was revealed he had posted offensive comments on his social media accounts, which reportedly ranged from highly sexualised remarks to anti-Muslim rhetoric.

A One Nation spokesperson said it had accepted Mr Collins's resignation from candidacy, and that he had acknowledged the comments were "offensive and unacceptable".

"One Nation Victoria has been made aware of a number of offensive comments posted on social media by our candidate for Melbourne, Matthew Collins," they said.

"Our party does not condone these comments."

Mr Collins released a statement via the party apologising for his past statements.

"I am very sorry for the unacceptable comments that I made," he said.

"They are not reflective of who I am as a person now and I deeply regret ever having made them."

One Nation has said it is too early to determine who will replace Mr Collins as its Melbourne candidate ahead of the state election, which will take place on November 28.