A US Army veteran who drove a truck into a crowd of New Year’s Day revelers had pledged allegiance to ISIS, but acted alone in the attack that killed at least 14 people, the FBI said on Thursday.The suspect, who was shot dead at the scene after firing at police, has been identified as Shamsud-Din Jabbar, a 42-year-old Texan who once served in Afghanistan. He drove from Houston to New Orleans on Dec. 31, and posted five videos on Facebook between 1.29 a.m. and 3.02 a.m. on the morning of the attack in which he said he supported ISIS, the militant group with fighters in Iraq and Syria, the FBI said.In the first video, Jabbar explains he had previously planned to harm his family and friends, but was concerned that the media coverage would not focus on the “war between the believers and the disbelievers,” FBI Deputy Assistant Director Christopher Raia said at a press conference.For all the latest headlines follow our Google News channel online or via the app.Jabbar also said in the videos