Israelis who survived being held prisoner in Gaza have been released in small groups since the first six-week phase began last month.
Mr Mengisto and Mr al-Sayed are civilians who entered Gaza a decade ago and have been held there since.
You can receive breaking news alerts on a smartphone or tablet via the Sky News app.
They are Eliya Cohen, Omer Shem Tov, Tal Shoham, Omer Wenkert, Hisham al-Sayed and Avera Mengisto.
You can also follow us on WhatsApp and subscribe to our YouTube channel to keep up with the latest news.
