In one of the most shocking developments to emerge in the week-and-a-half since Stephen Paddock killed 59 people and wounded more than 500 others during the worst mass shooting in US history, NBC is reporting that a maintenance worker said Wednesday he told hotel dispatchers to call police and report a gunman had opened fire with a rifle inside Mandalay Bay before Paddock began firing on the Harvest country music festival below.
Worker Stephen Schuck told NBC News that he was checking out a report of a jammed fire door on the 32nd floor of Mandalay Bay when he heard Paddock shoot security guard Jesus Campos in the leg. After the shooting, Campos peeked out from an alcove and told Schuck to take cover.
According to the official timeline, Campos was injured at about 9:59 p.m. Six minutes later, at 10:05 p.m., Paddock fired the first shots on concertgoers.
A police SWAT team got to the 32nd floor at 10:17 p.m., and a minute later learned that the security guard was hit and where the shots were fired from.