A driver who authorities say exploded a Tesla Cybertruck outside the Trump International Hotel in Las Vegas last week used artificial intelligence to plan the blast, according to the Las Vegas Metropolitan Police Department.

The New Year’s Day cybertruck explosion that killed one person outside a Las Vegas hotel was planned using ChatGPT, investigators say. Matthew Livelsberger, 37, of Colorado, carried out the attack, killing himself and injuring seven people on Wednesday, Jan. 1, LVMPD previously said.

The driver, who died before the blast, urged his fellow servicemembers to force Democrats out of government “by any means necessary.”