An explosion has struck a mosque in Egypt’s northern Sinai, injuring and killing people, according to local media.
Egyptian state media MENA, citing an official security source, said that at least 54 people were killed and at least 75 injured.
The blast occurred in the al-Rawda village, west of el-Arish, shortly after Friday prayers.
News reports said that after the explosion, gunmen in four off-road vehicles opened fire on worshipers.
Local media also reported the closure of the Arish-Rafah road, further east.
The attack comes a day before the Rafah border crossing, the main gateway for Palestinians in the besieged Gaza Strip to the outside world, was due to open for a three-day period.
The border was briefly open earlier this week.