At least five soldiers were killed and 16 wounded in Egypt's Sinai Peninsula on Friday by a car bomb, security sources said.
The bomb attack targeted a military convoy of armoured vehicles moving in the al-Kharouba area northwest of al-Arish, near the border with the Gaza Strip, the sources said.
Eyewitnesses had earlier heard a loud explosion near the Egyptian town of al-Arish in the Sinai Peninsula on Friday afternoon in what appeared to be an attack on a nearby army installation.
Security forces face a jihadist insurgency that has killed hundreds of soldiers and policemen since the army toppled President Mohamed Morsi of the Muslim Brotherhood last year after mass protests against his rule. Most attacks have been in Sinai.