The attacker who killed 14 pedestrians on Bourbon Street was “influenced by the discourse and messaging of the Islamic State,” the terrorist group said in a bulletin dated Thursday.

It is the deadliest attack by ISIS on the West in several years. But still, almost a week later, the group also known as Islamic State has yet to issue its trademark claim of responsibility for the horrific New Year’s violence in New Orleans.

Shamsud-Din Jabbar appears to have been inspired by the Islamic State, Biden says. The U.S.-designated terrorist group once controlled swaths of Syria and Iraq.