Egyptian President Abdel Fattah al-Sisi cut short a visit to Ethiopia for an African Union summit on Friday, after Islamic State's Egyptian wing claimed the killing of at least 30 security personnel in the Sinai Peninsula, Reuters reported. Sisi's office said in a statement that Sisi would return to Cairo after Friday morning's opening session. The four separate attacks on security forces in North Sinai on Thursday night were among the bloodiest in years. Most of the casualties occurred in the bombing of a military hotel and base in the heavily guarded provincial capital, al-Arish. Security sources in Sinai said three military planes left al-Arish for Cairo on Friday morning carrying 30 body bags, some of them containing dismembered corpses. They said at least five men were in critical condition and the death toll was likely to rise.