Immigration Minister Peter Dutton is being asked to explain why his department has denied a visa to the family of a dying Pakistani man studying in Melbourne who wants to see his family one last time.
Hassan Asif, 25, has been told he has weeks to live, after being diagnosed with advanced skin cancer.
But Mr Asif's mother and brother's application to travel to Australia was blocked with the Immigration Department, warning of the possibility they may overstay their visa or refuse to fly back home.
Labor's immigration spokesman Richard Marles said Mr Asif's case appeared a "cruel and callous decision".
"This appears to be a disgraceful and heartless decision," Mr Marles said in a statement.
"Mr Dutton needs to immediately intervene and sort out this bureaucratic bungle.
"If there is a legitimate national security risk that should be made clear. Otherwise, common sense and compassion should prevail."
Mr Asif has told the Daily Mail that he is living his last days.
"I'm dying and I just want my family to be here with me," he said.
Hassan's health deteriorating
Sherri Bruinhout, from Melbourne City Mission, which is providing accommodation and palliative care for Mr Asif, welcomed Mr Marles' intervention and said she hoped it would be met by a similar one from the Minister.
"We know that the Minister is a very compassionate person and we're very hopeful that when the family re-lodges their application he can intervene for a better result," Ms Bruinhout told Fairfax Media on Wednesday.
"Hassan and his family have been absolutely overwhelmed by the support and encouragement from the Australian population and around the world."
Overseas news outlets in the UK and also in Pakistan, where his family are also receiving public support, have covered Mr Asif's plight. His mother and brother are now reapplying for visa.
Ms Bruinhout said it was unusual for her organisation to seek the publicity, but on this occasion, it was the only option.
"We normally engage with governments gently and quietly as we find that can get some great outcomes but unfortunately in this case Hassan doesn't have that time, his health is deteriorating," she said.
Mr Asif wanted to fly home to be with his family after receiving his diagnosis but no commercial airliner would fly him home in his condition, meaning the only way he can be reunited with his mother and brother is if they are granted permission to fly to Australia.