A pick-up truck driver responsible for a deadly rampage in New Orleans acted alone, the FBI said.Officials said on Wednesday that they were seeking additional potential suspects over the terrorist attack which left 15 dead and dozens injured.But Christopher Raia, deputy assistant director of the FBI's counter-terrorism division, said on Thursday that the evidence now shows that Shamsud-Din Jabbar was solely responsible for the attack and professed allegiance to the so-called Islamic State.

A pick-up truck driver responsible for a deadly rampage in New Orleans acted alone, the FBI said.Officials said on Wednesday that they were seeking additional potential suspects over the terrorist attack which left 15 dead and dozens injured.But Christopher Raia, deputy assistant director of the FBI's counter-terrorism division, said on Thursday that the evidence now shows that Shamsud-Din Jabbar was solely responsible for the attack and professed allegiance to the so-called Islamic State.