Terrifying moment cops mistake UNLV gunman for bystander telling him to 'get out': New bodycam footage shows officers moving through classrooms as they tell dispatch there are 'bodies on every f***ing floor'

Cops responding to the deadly UNLV shooting mistook the gunman for a bystander telling him to 'get out' in newly released body camera footage. 

With their weapons drawn, two Las Vegas Metropolitan Police Department officers can be seen climbing stairs inside the school during the December 6 shooting.

The shooter, 67-year-old Anthony Polito, appears only for a few moments in the more than five hours of footage released Wednesday. 

Polito is seen wearing a long black trench coat over a white shirt and moving calmly through the first floor of the business school, one of his hands is visible at his side. 

The officers can be heard shouting at Polito 'get out! get out!' as they point to an exit and continue along a walkway. 

Polito opened fire inside the school and murdered three professors, Jan Chang, Patricia Velez and Naoko Takemaru. He was angered after having a job application rejected at the university. 

Anthony Polito is seen here walking out of the building housing the business school at the University of Nevada-Las Vegas after he fatally shot three professors and injured a fourth 

Polito opened fire at the University earlier this month, killing three professors and injuring a fourth person

Clark County Undersheriff Andrew Walsh said Thursday the two officers were not aware they had encountered the gunman inside the building. 

'They don't have a description of the shooter at the time, and they know there are other police resources on the first floor,' Walsh said. 

Roughly one minute after the brief interaction, Polito exited the building and was killed in a shootout after pulling his weapon, according to authorities. 

Other clips show officers swarming on the campus shortly after Polito opened fire just before midday. 

Officers can be seen combing through stairwells and hallways in an attempt to locate the shooter. 

One cop can be heard saying: 'Careful. Don't rush it. Watch the doors. Keep looking at the doors, he's still active.'

Another officer can be heard reporting that Polito 'was down', but they continue to search the campus. 

One officer can be heard adding: 'I have bodies in here, like a lot. Every f***ing floor.'

Other clips show officers swarming on the campus shortly after Polito opened fire just before midday 

Police have not yet been able to identify a specific motive in the shooting, but said he had been rejected from the university 

Police have not specified a motive for the shooting but said and had been turned down for a teaching job at UNLV and other Nevada schools. 

He left a tenured post in 2017 at East Carolina University in Greenville, North Carolina, after teaching business there for more than 15 years.

In a statement, UNLV President Keith Whitfield said the mass shooting was 'the most difficult day in the history of our university', and said his 'heart breaks for the families, friends and loved ones of Dr. Navarro and Dr. Chang'. 

Navarro-Velez was a mother-of-four, her former professor at the University of Puerto Rico, David Correa, told the Las Vegas Review Journal. 

Chang was a business professor who had worked at UNLV for over 20 years, and was a longtime respected educator focusing on management information systems. 

Takemaru was an Associate Professor of Japanese Studies at the University of Nevada and taught all levels of Japanese language. 

This photo provided by The Las Vegas Metropolitan Police Department shows the weapon used in the UNLV campus shooting by Polito

Professor Naoko Takemaru, pictured here, died from multiple gunshot wounds according to officials at Clark County Office of the Coroner/Medical Examiner

Patricia Navarro-Velez, an assistant professor at the UNLV accounting department, and Jerry Changn were shot dead by Polito 

Before the shooting, Polito mailed 22 letters to university faculty members across the US.

Officials were able to intercept some of the letters sent, and the first opened had an 'unknown white powder substance,' according to law enforcement.

Investigators searched an apartment in nearby Henderson, Nevada, following the shooting, 

Officials said they retrieved several electronic devices, including Polito's cellphone, one of the officials said. They also found a 'last will and testament' type document.