Sufi Muslim mosque, who ISIS would regard as apostates.

Via BBC:

Militants have launched a bomb and gun attack on a mosque in Egypt’s North Sinai province, killing 235 people, state media say.

Witnesses say the al-Rawda mosque in the town of Bir al-Abed, near al-Arish, was targeted during Friday prayers.
It is the deadliest attack of its kind since an Islamist insurgency in the peninsula was stepped up in 2013.

Egyptian President Abdul Fattah al-Sisi vowed to respond with “brute force” after talks with security officials.
No group has yet claimed the attack, but militants affiliated with so-called Islamic State have been responsible for scores of deadly attacks in the province.

They usually target security forces and Christian churches.

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