he had opened fire on the crowd. Campos was called a hero whose presence outside Paddock's suite stopped the concert carnage.

Lombardo on Friday released other new information regarding the investigation. Paddock shot at the fuel tanks at McCarran International Airport during the rampage, and Lombardo said Friday investigators now believe he did so "with intent."

The airport is reviewing safety measures and has contacted experts in fuel storage but that there's a low probability aviation fuel could be ignited by gunfire, Lombardo said.

Lombardo also provided details Friday of the autopsy that was performed on Paddock. A medical examiner found nothing unusual during a visual inspection, but his brain was shipped to a facility to look for any minute problems.

Of the 546 injured in the mass shooting, 501 have beendischarged and 45 remain hospitalized, Lombardo said. The number of dead remains at 58, but he said that number may rise.

Lombardo was emotional as he spoke Friday, recalling the efforts of law enforcement to help those who had been wounded. One of his officers suffered four gunshot wounds, yet still helped others at the scene. The officer was wounded in the bicep, chest and back when the shooter targeted responding police vehicles, Lombardo said.

Destiny Alvers, who attended the Route 91 country music festival and helped rescue her friend who was shot, visits a makeshift memorial near the Mandalay Bay hotel on the Las Vegas Strip on Oct. 3, 2017, after a gunman killed at least 58 people and wounded more than 500 others. Getty

The officer is already eager