LAS VEGAS – Police said Monday they have a warrant for a 26-year-old ex-convict identified as the prime suspect in a shooting and fiery crash that killed three people last week on the Las Vegas Strip.

"We can say with certainty that Ammar Harris is the suspect who fired the fatal shots," Las Vegas police Capt. Chris Jones told reporters at an afternoon update about a manhunt that he said would be advertised on southern Nevada billboards.

Police previously released a photo of Harris taken after his arrest last year in Las Vegas in a 2010 prostitution case. It showed Harris with tattoos on his right cheek and words on his neck above an image that appeared to depict an owl with blackened eyes. Jones said Harris should be considered armed and dangerous.