A relative of Mohammed Haneef, charged with supporting the UK-terror plot, arrived in Brisbane on Saturday to assist the detained person, especially in the judicial process.

Imran Siddiqui, a cousin of Haneef's wife Firdous Arshiya, told reporters at Brisbane airport that anyone who knew Haneef would be shocked at the charges levelled against him as he is a "model citizen and a model person."

Siddiqui, a 31-year-old business consultant, said he had come to Australia to provide moral support and to clarify the legalities of the case.

"Someone has to be there from home," he said adding, "physically, a person to be here is very important."

He said he would study how the legal proceedings against Haneef were moving.

Haneef's case has become mired in controversy after the Australian government moved to cancel his working visa despite a Brisbane magistrate granting him bail on July 14 and loopholes appeared in the Australian police's charges against Haneef.

Siddiqui said his family had found the ordeal to be "traumatic", but was coping with it well. "It has been quite difficult," he said.

Siddiqui said anyone who knew Haneef would be shocked by the allegations against him.

"We all know him as a very good person, as a model citizen and a model person -- character- wise, behaviour, everything. He has done well in his studies," Siddiqui said.

Siddiqui said the family was pleased with the legal team of Haneef so far and thanked the judiciary for granting Haneef bail.