The family of Ibrahim Halawa has confirmed that his trial in Cairo, which was scheduled for today, has been put back until 26 April.
The Dublin teenager has been detained in Egypt for over 18 months.
Amnesty International has designated him a "prisoner of conscience'.
The 19-year-old and three of his sisters were arrested in the al-Fateh mosque in Cairo on 17 August 2013 after taking part in a protest related to the ousting of former Egyptian president Mohammed Mursi in Cairo.
His sisters were released after three months in prison.
Mr Halawa and 493 other people are facing charges of murder, attempted murder and participating in an illegal protest.
Amnesty International, which has investigated the case, has said he has no case to answer and has declared him a prisoner of conscience.
His sisters yesterday said that all other foreign prisoners from the UK, United States, Turkey, Canada and Australia have been released following pressure from their respective governments.
Over 70 people demonstrated yesterday calling for the Government to secure Mr Halawa's release from prison.
A Government spokesperson yesterday said the Taoiseach was fully aware of the case.
The Embassy of Ireland in Cairo has also been in sustained and direct contact with the Egyptian authorities in relation to the case.
