Ineligible Labor MPs yet to resign: PM

Malcolm Turnbull has taken a swipe at three Labor MPs caught up in the dual-citizenship saga for delaying their resignations from federal parliament.

Susan Lamb, Josh Wilson and Justine Keay signalled on Wednesday they would quit their lower house seats following the High Court's decision to disqualify Labor senator Katy Gallagher.

"They have said they are ineligible, they have acknowledged they are ineligible and they still have not resigned, so they are drawing salaries and using MPs entitlements," the prime minister told ABC radio on Thursday.