An Egyptian jihadi group allied with the Islamic State in Iraq and Syria (Isis) has claimed the killing of an American oil worker that took place in August this year.

The militant group Ansar Beit al-Maqdis, which recently changed its name to Sinai Province, claimed the attack via its official Twitter account on 30 November.

It published images of the worker’s passport along with two identity cards.

The worker, William Henderson, was employed by US-based oil company Apache and was attacked in Egypt’s Western Desert.

Prior to the claim from Ansar Beit al-Maqdis, it was thought that he was killed in a non-ideological car-jacking.

The militant group has claimed 10 other attacks in Egypt that have taken place over the past four weeks.

It also carried out an attack on an army checkpoint in the northern part of the Sinai Peninsula in October, killing 31 soldiers.