Vice President Joe Biden has called the gunman who killed four marines and a sailor at a Tennessee reserve center last month a “perverted jihadist,” even though officials say they still don’t know the motive for the shooting. The FBI has said there’s no evidence Muhammad Youssef Abdulazeez was motivated by ISIL. He also suffered from mental illness and was preparing for bankruptcy. Joe Biden made the remarks at a memorial to the slain servicemembers on Saturday.

Vice President Joe Biden: “When this perverted jihadist struck, everyone responded — marines and sailors moving from room to room helping fellow warriors to safety.”

Joe Biden is said to be weighing a run for the Democratic presidential nomination.