At least 85 people have been killed after suspected militants attacked a mosque in Egypt.

According to authorities, the attack was carried out during Friday prayers.

It has been established that some men who were in four vehicles opened fire at worshipers inside a mosque, AP reported.

Egypt has been fighting an Islamist insurgency in the region of Sinai province, where this happened and has intensified since 2013.

Some 80 people were also wounded in the attack, health officials said. One report said the target appeared to be supporters of the security forces who were praying at the mosque.

President Abdul Fattah al-Sisi is to meet security officials to discuss the incident, Egypt’s private Extra News TV reported.

The latest attack comes weeks after a deadly militant ambush of Egyptian soldiers in Sinai.

It is not yet known who was behind Friday’s attack. Jihadist militants have been waging an insurgency in recent years, stepping up attacks after Egypt’s military overthrew Islamist President Mohammed Morsi in July 2013.

Hundreds of police, soldiers and civilians have been killed since then, mostly in attacks carried out by Sinai Province group, which is affiliated to so-called Islamic State (IS).