ISIS has claimed responsibility for the attack on a seaside resort in Tunisia on Friday, saying the massacre was an 'attack upon the nests of fornication, vice and disbelief in God.’ 

They warned 'worse is to follow.’

The gunman, which the Islamist extremist group identified as Abu Yahya al-Qirawani, opened fire on the beach in front of the Hotel Riu Imperial Marhaba in the coastal city of Sousse, killing 38 people and injuring at least 36 others.

The Daily Mail reports that Abu Yahya al-Qirawani is the jihadi name of 23-year-old aviation student Seifeddine Rezgui.

The attacker, who was armed with an assault rifle and grenades, was shot by authorities after Friday’s attack.

Among the dead was Lorna Carty, from Co. Meath, Ireland, who was on holiday with her husband.

Tunisia Prime Minister Habib Essid has said the majority of the dead were British.

According to the BBC, five Britons have been confirmed by the Foreign Office; however, the Tunisian health ministry claims eight Britons have been identified among the dead.

One Belgians and one German have also been identified, and an unknown number of French nationals were also killed.

The attack in Tunisia was one of three attacks committed by Islamic terrorists yesterday. 

In France, a man beheaded his boss before causing an explosion at a chemical plant near Lyon, in which two people were hurt. A severed head was found hanging from a fence along with two flags inscribed with Islamic writing.

ISIS also claimed responsibility for the blast, believed to be a suicide bomber, that killed 25 people at the Shiite-affiliated Imam al Sadeq mosque in Kuwait.