The visit which will be Mousa's first comes nearly two weeks after an Israeli military attack on the Turkish ship carrying humanitarian aid was on its way to Gaza . Twenty peace activists were killed by commandos who descended on the ship from military helicopters and dozens were injured triggering international outcries and condemnation

The Secretary General's assistant ascertained that Mousa  will enter Gaza on Sunday on a  one day visit via the Rafah crossing, which has been kept indefinitely open  after the Israeli interception 

Sami Abu Zuhri,  Hamas spokesman, maintained that Mousa's visit reflects a growing sense among Arabs that the blockade on Gaza must end

Arab League officials in Cairo said the visit is also intended to prompt reconciliation dialogue between Hamas and Fatah