Al-Jazeera journalist Peter Greste will not rest until his colleagues are released from prison in Egypt

Peter Greste's family spoke of their happiness at the journalist's release from a Cairo prison

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Al-Jazeera journalist Peter Greste will not rest until his colleagues are released from prison in Egypt, his family says.

After 400 days behind bars, Mr Greste was freed and deported on Sunday. He landed safely in Cyprus, on his way to his native Australia.

He was arrested in 2013 and tried on charges that included spreading false news and aiding the Muslim Brotherhood.

Two al-Jazeera colleagues, Mohamed Fahmy and Baher Mohamed, remain jailed.

Mr Fahmy, who holds dual Egyptian and Canadian citizenship, could be freed if he renounces his Egyptian nationality, presidential sources said.

But there are still concerns about Mr Mohamed, an Egyptian who holds no dual nationality.

Mr Greste spoke about his concerns for his colleagues to his family after his release.

'Small cogs'

Speaking at a press conference in the Australian city of Brisbane, brother Andrew Greste said: "We want to acknowledge that Peter's two other colleagues are still there."

His father Juris Greste said that they felt very deeply for those left behind.

Andrew Greste also thanked all those who had supported his brother and worked for his release.

"We are small cogs in this massive campaign," he said.

Australia's Foreign Minister Julie Bishop said Peter Greste had told her in a telephone conversation that he was eager to return to his family in Brisbane.

"He was immensely relieved and he was desperate to come home to Australia and reunite with his family," said Ms Bishop.

"From my discussion with him, he was very keen to be back on a beach and lying in the sun in Australia."

Timeline: Journalists' detention

Mr Fahmy (left) and Mr Mohamed remain in jail

• 29 December 2013: Peter Greste and Mohamed Fahmy arrested in police raid on Cairo's Marriott Hotel. Baher Mohamed later arrested at home
• 29 January 2014: 20 people including the three journalists referred to trial, charged with spreading false news, belonging to a terrorist organisation and operating without a permit
• 22 February: First court appearance of the three journalists
• 23 June: Defendants sentenced to seven years, with Baher Mohamed receiving an additional three years
• 12 November: President Sisi signs decree allowing repatriation of foreign prisoners
• 1 January 2015: Highest court orders retrial, but the three journalists not allowed bail