Cairo International Airport authorities adopted tight security measures Monday at the airport VIP lounge, preparing for the arrival of the Israeli ambassador to Cairo. Ambassador Yaakov Amitai had left for Tel Aviv more than 10 days ago following the start of the Israeli military campaign against the Gaza Strip. A source told German news agency DPA that the Israeli Embassy in Cairo had notified the airport that Amitai would arrive with eight staff members on an Air Sinai flight. The ambassador was previously scheduled to return Sunday, the source told DPA, adding that airport authorities predicted he might have postponed his arrival because of the recent political tensions that followed President Mohamed Morsy's declaration of new presidential powers. Relations have grown more complicated between Cairo and Tel Aviv following the 25 January revolution, which toppled former President Hosni Mubarak and brought Morsy, an Islamist, to power. Morsy had backed Palestinian militant group Hamas during the Israeli military campaign that started on 14 November with the assassination of Hamas military leader Ahmed al-Jabari. Prime Minister Hesham Qandil had visited Gaza to voice solidarity with Palestinians. Many in Egypt have been calling for repealing the peace treaty signed by both countries in 1979, after Israel killed at least six Egyptian security officers in a border raid in August 2011.