The three Halawa sisters - held in custody in Egypt for almost four months - will finally arrive back in Dublin this morning.

However, the Halawa family says they're still concerned about 17-year-old Ibrahim - who remains in an Egyptian prison with no clear sign of when he'll be released.

Omaima, Somaia and Fatima Halawa - from Firhouse in Dublin - will finally arrive back on Irish soil at Dublin Airport shortly after 10 o'clock this morning.

They'd been held in a Cairo prison without charge for close to four months after being arrested during a protest at a mosque in support of the ousted Egyptian President Mohammed Morsi.

The three sisters are believed to have spent most of that time in a single room - and with almost no contact with the outside world.

They were separated from their 17-year-old brother Ibrahim - who even now remains in custody.

He had been expected to be released earlier this month - however, a number of scheduled court appearances were suspended - and the Halawa family believe it could now be the end of December before they are fully re-united.