Gulf countries, Turkey, Sinai represent heightened risk as Jewish holiday coincides with Muslim holy month of Ramadan, says National Security Council

Jihadists ambush a military checkpoint in the town of Sheikh Zuweid; sources say 3 attackers killed by security forces

Explosives at checkpoints wound 10 in area home to Islamic State-led insurgency

Police raid hideout of 'terrorist elements' in provincial capital of El-Arish, find weapons and explosives, officials say

Announcements offer first signs of support from terror group's global affiliates in Abu Bakr al-Baghdadi's successor Abu Ibrahim al-Hashemi Al-Qurayshi

Blast in Bir al-Abd also wounds six; not immediately clear who was behind shelling as Cairo battles IS insurgency in area