Juris Greste, father of jailed Australian journalist Peter Greste of Al Jazeera, addresses a news conference to discuss their continuing efforts to attain his freedom in Kenya's capital Nairobi. Picture: Thomas Mukoya

Nairobi -

The father of an Australian Al-Jazeera journalist jailed in Egypt says he respects the integrity of Egypt's courts but knows his son is the victim of injustice.

Juris Greste told a news conference in Kenya on Thursday that he and his wife “passionately and absolutely” know that a “grave and serious” injustice has taken place in the case of son Peter Greste.

Peter Greste is appealing his seven-year prison sentence after a court in June found that he and two other Al-Jazeera journalists aided the Muslim Brotherhood, which Egypt classifies as a terrorist organisation.

Juris and Louis Greste travelled to Nairobi, where their son was based and is honorary co-chair of the Foreign Correspondents Association of East Africa. Journalists in Nairobi have tried to shine a spotlight on the jailings. - Sapa-AP