Egypt has accused detained journalists from the Qatari-based Al-Jazeera television network of belonging to a "terrorist" group, saying they had ties with the blacklisted Muslim Brotherhood.
It was not immediately clear if all three journalists face the same accusation, the first prosecutors have brought against journalists since the government designated the Brotherhood a "terrorist" group last week.
Prosecutors had earlier ordered the detention of three journalists with Al-Jazeera's English channel, including Australian Peter Greste, after their arrest on Sunday in a Cairo hotel.
The prosecution accused the suspects of "belonging to a terrorist group," in a statement.
The prosecution can still choose to free the journalists, or it can formally charge them and put them on trial.
Al-Jazeera demanded the release of the journalists.
Al-Jazeera English managing director "Al Anstey" said "It is outrageous to be treating bona fide journalists in this way", adding "the allegations that are being made are totally false and unfounded. We operate in Egypt legally".