Immigration Minister Scott Morrison says there will be no further investigation into asylum seekers' claims they were deliberately harmed by Navy personnel during a turn-back of their boat, because the matter is "closed".

The ABC's 7.30 program last night broadcast an interview with one of the alleged victims, who said he was forced to touch the exhaust after ignoring a ban on entering the engine room.

But Mr Morrison says the claims are no more reputable now than when they were first aired by the ABC two months ago.

"All we saw last night was a repetition of baseless claims, nothing more than that," he told AM.

"The Government stands by all its rejections of these insulting and offensive claims."

The minister ruled out any further inquiry, including interviewing the asylum seekers, because he said the burden of proof lay with those making the claims, not the Australian Government.

"I don't think it's for the Government to disprove the negative, it's for those who have allegations to actually prove the positive."

Mr Morrison said the Navy examined the incident when the claims were first made.

"When the assessment was done after these events there was found to be no breach. I believe the Navy," he said.

"I don't find what was said last night any more credible than what was said two months ago, nothing's moved on; I suggest the ABC should.

"This matter is closed."

Mr Morrison would not confirm whether or not authorities filmed the turn-back operation but said if any footage existed it would have been included in the Navy's own assessment.

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He said video recordings were usually only taken for search and rescue operations and this specific turn-back was not one of those.

Liberal MP Dennis Jensen said if the asylum seekers' claims were legitimate, a whistleblower sailor would have come forward by now.

"If that [incident] had happened, there would have been at least one sailor that would have been so disgusted that at the very least, on the quiet would have said 'hang on the official story is not correct'," Dr Jensen said.