Hundreds of Hamas supporters and leaders demonstrated in Gaza on Friday against a decision by an Egyptian court to ban the Islamist movement's activities and confiscate its headquarters in Cairo.

Waving Hamas green flags and holding huge Egyptian flags, the angry crowds gathered outside a once diplomatic representative office of Egypt in Gaza, which was closed after Hamas seized control of the Gaza Strip in 2007.

Khalil al-Hayya, a senior Hamas leader told the rally "the decision of the court is unsuccessful and we call on Egypt, people and leadership to immediately withdraw it."

"The decision of the court to ban the movement looks judiciary in its shape, but in its depth is completely political. This decision encourages the Zionist occupation (Israel) to wage a large aggression on Gaza," said al-Hayya.

After the Egyptian army ousted Islamist president Mohamed Morsi in early July, relations with Hamas deteriorated after the latter showed a large support to Morsi and called the change in Egypt "an illegal coup."

The new Egyptian leadership accused Hamas of intervening into Egypt's internal affairs, the thing that Hamas and its leaders had repeatedly denied.

Meanwhile, the Egyptian army destroyed smuggling tunnels dug underneath the borders with the Gaza Strip to defy an Israeli blockade imposed on the coastal enclave.

Egypt had also kept Rafah border crossing point closed. Hamas officials said that since the beginning of this year, the crossing was only opened for nine days.

On Tuesday, An Egyptian court decided to ban all activities of the Palestinian Hamas movement and confiscate its headquarters in Cairo.

A lawsuit was filed against the movement to ban its activities and designate it as a terrorist group, after the ouster of Islamist president Mohamed Morsi last July.

Hamas is an offshoot of the Muslim Brotherhood and is well known for its support to the group, from which Morsi hails.

More than 60 members of the group are facing trial on jailbreak charges, along with Morsi and top leaders of Brotherhood.

They are accused of facilitating storming three prisons, killing policemen and helping hundreds including terrorists to flee during the early days of the 2011 revolt that ousted president Hosni Mubarak.