Egyptian air force planes carried out strikes directed on camps in Libya where Cairo believes militants responsible for a deadly attack on Christians are based.

Egyptian President Abdel Fattah Al-SISI said he had ordered strikes against what he called terrorist camps, declaring in a televised address that states that sponsored terrorism would be punished.

The sources said six strikes took place near Derna in eastern Libya at around sundown, hours.

The Egyptian military said the operation was ongoing and had been undertaken once it had been ascertained that the camps had produced the gunmen behind the attack on the Coptic Christians in Minya.