Azzam spoke at solidarity rally organized by Islamic Jihad near the Salah al-Din gate on the Egyptian border.
He said the Sinai attack was an act of “unspeakable cruelty” that had no justification and served only Israeli interests.
“We hope this crime does not affect our relationship with Egypt as our strategic goals are the same,” Azzam added.
Commenting on the closure of cross-border smuggling tunnels and the Rafah border crossing, he said all security measures must be taken to prevent further attacks.
However, he added that he hoped the clampdown would not be in place for too long.