Australian journalist Peter Greste is elated his two Al Jazeera colleagues have been freed from an Egyptian prison, but says he's waiting for the day all three of them are declared innocent.  Mr Greste says it's too soon to celebrate, given the threat of a retrial for his colleagues, Mohamed Fahmy and Baher Mohamed.  "The trial is ongoing, and nobody has yet been acquitted. I'm looking forward to the day when the court declares all of us innocent of the charges. Then the party will really begin," the Australian said in a statement on Friday.  But he said he was overjoyed that his colleagues had walked from jail on bail, and had been reunited with their families.  "One of the hardest things I've ever had to do was to walk out of prison and leave them behind, so it is wonderful to know that they're at last able to join their families as I did just over a week ago."  A Cairo court released Fahmy and Mohamed overnight, after more than 400 days behind bars, pending a retrial over claims they spread false news and supported the banned Islamist movement of deposed president Mohamed Morsi.  Mr Greste had faced the same accusations and the trio was last year sentenced to serve between seven and 10 years.  The charges have been condemned as politically motivated by the international community, and have been a major source of embarrassment for Morsi's successor Abdel Fattah al-Sisi as he seeks to shore up international support, following a widely condemned crackdown on the opposition.  Mr Greste was released and deported unconditionally earlier this month under a new law permitting foreign prisoners to be sent back to their home countries.  Mohamed Fahmy, a Canadian-Egyptian, renounced his Egyptian citizenship, hoping he could benefit from the law, but so far that hasn't happened.  Mr Fahmy has paid 250,000 Egyptian pounds ($A42,600) bail, while Egyptian Baher Mohamed was freed without having to pay bail. The two must reappear in court on February 23.  Canada has welcomed Mr Fahmy's release, but says any prospect of a retrial is unacceptable and he should be allowed to leave Egypt.  Canada's Prime Minister Stephen Harper said he could not explain why Mr Greste and Mr Fahmy had been treated differently.  "We will continue to press for his release, and we do remain optimistic this case will be resolved," he said.  Since his release, Mr Greste has continued to campaign for his colleagues and at his first press conference after returning too Australia, vowed: "We'll see them out."  Al Jazeera said the men's release on bail was "a small step in the right direction".  "The focus though is still on the court reaching the correct verdict at the next hearing by dismissing this absurd case and releasing both these fine journalists unconditionally," a spokesman for the news network said in a statement.  Do you have any news photos or videos?
Two Al-Jazeera colleagues of Australian Peter Greste have been freed pending retrial on charges of supporting the blacklisted Muslim Brotherhood.