Egypt bomb kills first lieutenant and soldier

The incident follows a Friday roadside bomb which killed a police officer, also in el-Arish.

The Egyptian government has been battling a long-running insurgency in northern Sinai, which escalated after the military ousted Islamist President Mohammed Morsi in July 2013 amid massive protests against his rule and cracked down on Islamic groups.

The Islamic State affiliate in Egypt has claimed responsibility for multiple attacks in northern Sinai.

While the violence has largely been confined to Sinai, bombs have also hit other parts of the country, including Cairo.