At least three Egyptian policemen have been killed in a bombing in the Sinai Peninsula as Islamic State claimed responsibility.
State television said there were also several people wounded in Wednesday's bombing in North Sinai provincial capital El-Arish.
IS' affiliate in Sinai said one of its militants drove an explosives-laden vehicle into a police club in the town.
Islamic State said in a statement on Twitter that a successful operation conducted by "martyr Abu Aesha al-Masry" managed to detonate a car bomb outside the club.
"More [attacks] are waiting for them," the statement said.
IS claimed the attack came in retaliation for the government's arrests of tribal women in North Sinai.
Security troops in the largely desert Sinai peninsula have come under repeated attacks from hardline jihadists since the 2011 uprising that toppled long-time dictator Hosni Mubarak.
The extremists stepped up their attacks after the military deposed Islamist president Mohammed Morsi in 2013, killing scores of security personnel.
The violence has mostly occurred in northern Sinai, prompting authorities to set up a kilometre-deep buffer zone there along the Gaza border.