When Hazem Hamouda landed in Egypt for a dream break with his Australian-born family, he never imagined that the prisons of Egyptian President Abdel Fattah al-Sisi would swallow him to this day.

Hamouda, a 55-year-old father of six, was kidnapped by Egyptian security forces minutes after arriving in Egypt.

More than a year later, Hamouda is still in a Cairo prison "where his mental and physical health deteriorates quickly," according to a British Guardian report.

The Egyptian authorities accuse Hamouda of belonging to the banned Muslim Brotherhood and publishing false information, but no judicial charges have been brought against him by the judicial authorities.

His eldest daughter, Lamis Hamouda, 29, says her father, who was an information technology consultant at Queensland Health, has nothing to do with the blacklist.

Hamouda's family suffers from a severe lack of knowledge of his news, and believes that his arrest may be linked to Facebook posts written during the Arab spring waves in 2011.

"There is no official evidence, and we are trying to speculate about why they arrested my father. That is the only possibility we can reach," she said.

Hammouda, a citizen of Australia and Egypt, landed in Cairo on the anniversary of the Egyptian revolution on January 25, 2018, a time when Egyptian security is usually at its highest readiness and sensitivity.

The family says that despite the hard work of the Australian government and the legal team, Hamouda is still held in a nine-meter cell in three with 13 other men in the notorious Tora prison.

"They share a toilet that was never cleaned by my parents, and everyone sleeps on the ground because there is no family," says Hamis.

She adds that her father, who has not lived in Egypt for 30 years and despite his courage, "collapses several times when we visit."