Dad who called 911 for help during break-in killed by Las Vegas police officer

A 43-year-old man was shot dead by police after calling 911 to report intruders had entered his home in Las Vegas.

Brandon Durham was at home with his 15-year-old daughter when he called the emergency line to report armed intruders were trying to break into his property on 12 November.

Bodycam footage shows Mr Durham struggling with a person over a knife in the moments before he was shot and killed at the scene.

"The loss of life in any type of incident like this is always tragic, and it's something we take very seriously," Las Vegas Metropolitan Police Assistant Sheriff Dori Koren said on Thursday.

The force is investigating the incident.

Mr Durham called 911 to report multiple people were outside shooting at his residence in Las Vegas' Sunset Park neighbourhood, where he had been staying with his 15-year-old daughter, Sky News' US partner network NBC reports.

It was one of multiple emergency calls reporting a shooting in the area.

Mr Durham then said someone had managed to get into his home through the front and back doors of the property and he was locking himself in the bathroom, according to a police statement from 14 November, two days after the incident.

Officers reported to the scene at approximately 12:40am and could hear screaming from inside the residence.

One of the officers, Alexander Bookman, kicked open the front door and once inside, saw Mr Durham and another individual, later identified as 31-year-old Alejandra Boudreaux, struggling over a knife in a doorway.

Mr Bookman ordered them to drop the knife and about two seconds later, the officer fired the gun and Mr Durham appeared to be struck, the bodycam footage shows.

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Both Mr Durham and Mr Boudreaux fell to the ground and the officer fired another five shots. Roughly three seconds are believed to have gone by between the first and last shot, NBC reports.

Attempts were made to save the 43-year-old but he died at the scene.

Ms Boudreaux was taken into custody and is facing charges of home invasion with a deadly weapon; assault with a deadly weapon domestic violence; willful or wanton disregard of safety of persons resulting in death; and child abuse, neglect or endangerment.