ANSBACH, Germany (AP) — The Islamic State group has claimed responsibility for a suicide attack in Ansbach, Germany that wounded 15.

The Aamaq news agency that is linked to IS said the attack was carried out by “one of the soldiers of the Islamic State.”

Aamaq said Monday that the man carried out the attack in response to calls by the group to target countries of the U.S.-led coalition.

Authorities say a failed asylum-seeker from Syria blew himself up and wounded 15 people on Sunday after being turned away from an open-air music festival in southern Germany.

It was the fourth attack to shake Germany in a week — three of them carried out by recent migrants.