The hero Mandalay Bay security guard who vanished hours before he was due to give interviews with major TV networks will now break his silence on the Ellen DeGeneres Show.

Jesus Campos, who was shot and wounded in the Las Vegas massacre, disappeared from the public eye last week ahead of several TV interviews, including with Fox News' Sean Hannity.

But DeGeneres has now confirmed that the security guard sat down with her for a pre-taped interview that is set to air on Wednesday.

'Tomorrow, the first people to encounter the Las Vegas shooter are here - security guard Jesus Campos and building engineer Stephen Schuck,' DeGeneres tweeted late Tuesday night.

Mandalay Bay security guard (center) will break his silence in an interview with Ellen DeGeneres and building engineer Stephen Schuck on Wednesday

Mandalay Bay security guard Jesus Campos (pictured for the first time since the Las Vegas massacre) vanished hours before he was scheduled to give a series of TV interviews last week

It comes after police spoke out saying Campos was a victim and he was not a missing person after questions were raised about his disappearance.

Campos was shot and wounded by Stephen Paddock when he went to investigate the gunshots coming from the 32nd floor suite in the Mandalay Bay hotel.

Campos spoke with police after the ordeal but hasn't yet spoken publicly about the October 1 massacre.

Questions have been raised about his whereabouts but police told Fox News on Tuesday that he was not considered a missing person.

'He is a victim in this and we don't discuss victims,' Las Vegas Police officer Larry Hadfield said.

A spokeswoman for MGM Resorts International, the casino company that owns the Mandalay Bay hotel, said Campos was safe but that he wanted people to respect his privacy.

They added that Campos will tell his story when he is ready.

Fox News' Sean Hannity tweeted that Campos cancelled his appearance on his show Thursday night. It has since been revealed that Campos went to a medical clinic instead

The security guard was shot and wounded by Stephen Paddock when he went to investigate the gunshots coming from the 32nd floor suite in the Mandalay Bay hotel

It comes after a representative for Campos' union said he had prepared last Thursday for TV appearances but went to a health clinic instead.

Security, Police, and Fire Professionals of America leader David Hickey said Tuesday he last heard about Jesus Campos' whereabouts from a union member who messaged that he was with Campos at the clinic.

Hickey says the same union member sent messages on Friday saying he was with Campos but not saying where.

Campos canceled on Fox News' Sean Hannity as well as CBS, CNN, ABC and NBC. He was pictured for the first time since the massacre on October 10 as he accepted an award from his union.

Stephen Paddock shot the security guard before opening fire on concert-goers from his 32nd floor suite in the Mandalay Bay hotel

As music fans at the Route 91 Harvest festival fled, Campos alerted police to Paddock's whereabouts

ORIGINAL TIMELINE This is the original timeline of events given out by police last Wednesday. 10:05pm: Paddock fires his first shots on the crowd, as seen on CCTV. 10:12pm: First two officers arrive on the 31st floor and announce gunfire is coming from directly above them. 10:14pm: Guard Jesus Campos approaches Paddock's room and is shot, but only injured. 10:15pm: The last shots are fired from the suspect, per bodycam, due to Campos' intervention. 10:17pm: The first two officers arrive on the 32nd floor from the 31st. 10:18pm: Campos tells the cops he was shot and gives them the exact location of the suspect's room. 10:26-10:30pm: With Paddock quiet, eight additional cops arrive and they decide to evacuate the rooms on the floor. 10:55pm: Eight officers arrive in the stairwell next to the suspect's room and find the door tampered with and a camera on a room service cart outside; they decide to hold off. 11:20pm: Paddock's room is breached and police enter the room to find him dead. Advertisement

NEW TIMELINE This is the new timeline given out on Monday. 9:59pm: Campos approaches Paddock's room looking for an alarm going off at a door nearby - likely from the stairwell. He is shot at and injured. He immediately notifies hotel security. Stephen Schuck appears to back up this account 10:05pm: First shots fired by suspect. 10:12pm: First two officers arrive on the 31st floor. 10:15pm: The last shots are fired from the suspect for reasons unknown. 10:17pm: The first two officers arrive on the 32nd floor from the 31st. 10:18pm: Campos, who has been stricken for almost 20 minutes, tells police about Paddock's room. 10:26-10:30pm: With Paddock quiet, eight more cops arrive and they decide to evacuate the rooms on the floor. 10:55pm: Eight officers arrive in the stairwell next to the suspect's room and find the door tampered with and a camera on a room service cart outside; they decide to hold off. 11:20pm: Paddock's room is breached and police enter the room to find him dead. Advertisement

His disappearance came just hours after MGM Resorts International disputed the official timeline of the shooting.

They rejected any suggestion that hotel staff delayed calling 911 for six minutes after Paddock opened fire.

The latest chronology raised a series of questions about whether officers were given information quickly enough to possibly have a chance to take out the gunman before he could carry out the bloodshed.

But according to resort officials, it was no more than 40 seconds between the time Campos used his walkie talkie to call for help and Paddock opening fire on the crowd from two windows in his suite.

Earlier in the investigation, police had said that Paddock shot through his door and wounded Campos after the guard distracted him from firing on the crowd out the windows.