Clark County Sheriff Joseph Lombardo announced on Monday a major change in the timeline of events on the night of the Las Vegas shooting that raises serious questions.

Lombardo said during the press conference that security guard Jesus Campos, who was the first on scene and who gunman Stephen Paddock shot in the leg, was shot six-minutes beforePaddock fired on the country music concert killing 58 and injuring over 400.

Now the official timeline is that Paddock shot Campos at 9:59 p.m.; whereas last week officials said that Campos told police that Paddock shot him at 10:18 p.m., approximately three minutes after the shooting ended, The New York Times reported.

Authorities also said last week that Paddock fired well over 200 shots at Campos and that Campos was lucky to be alive.

Video of the whole press conference here –