At least 50 people have been killed after militants attacked a mosque in the north of Egypt's Sinai Peninsula, the Sky News Arabia TV channel reported on Friday.
Britain Secretary of State for Foreign Affairs, Boris Johnson: "Deeply saddened by the abhorrent attack on a mosque in North Sinai, Egypt".
Hours after the attack, Egypt's military launched air strikes on targets in mountainous areas around Bir al-Abed, security sources and witnesses said.
President Abdel Fattah al-Sisi, a former armed forces commander who presents himself as a defender against Islamist militants, convened an emergency meeting with his defence and interior ministers and intelligence chief soon after the attack, the presidency's Facebook page and state television said. "God bless the people of Egypt", he tweeted.
US President Donald Trump, in a post on Twitter on Friday, called the assault a "horrible and cowardly terrorist attack". "The world can not tolerate terrorism, we must defeat them militarily and discredit the extremist ideology that forms the basis of their existence!"
Italian President Sergio Mattarella sent a cable of condolences over the victims.
The Al Rawdah mosque after the attack which left many killed
But this was the first major militant attack on a Muslim mosque, and it eclipsed any past attacks of its kind, even dating back to a previous Islamic militant insurgency in the 1990s.
Such an evil and cowardly terrorist attack on worshipers in Egypt.
President of Evangelical Church in Egypt Andrea Zaki condemned the terrorist attack, saying it aims at destabilizing the security and stability in Egypt. Our strength & resolve will overpower their extremist ideology.
US Vice President Mike Pence also took to the micro-blogging site to express grief and emphasised that one can not allow terror forces to win.
The militants opened fire from four off-road vehicles on the hundreds of worshippers attending the sermon in the mosque. ISIS' affiliate in Egypt claimed that attack.
After a mosque in Egypt's north Sinai region was attacked on Friday, claiming at least 235 lives, leaders around the globe showered their condolence messages to the families of the victims, asking everyone to stand against the rising terrorism.
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