The Egyptian security officials say a roadside bomb has killed three workers contracted to build a security wall in the northern Sinai city of el-Arish.
The officials said further that 10 other workers were seriously injured in the explosion. The officials blamed the incident on an Islamic State affiliate, which is active in the Sinai Peninsula.
The official didn’t identify himself as they were not authorised to speak to the media. Suspected IS militants on Sunday shot and killed three workers outside their homes in el-Arish.
Egypt has been struggling to contain an insurgency by Islamic militants in northern Sinai. The insurgency intensified after the military’s 2013 ouster of Mohammed Morsi, an elected but divisive Islamist president.