A Las Vegas Metropolitan Police Department officer allegedly killed his 46-year-old wife and 5-year-old son on Monday before phoning emergency personnel and warning he was burning down his home and would kill anyone who tries to stop him.

When police arrived on the scene, officer Hans P. Walters, a 20-year police veteran, was reportedly standing in his front doorway holding a gun as smoke and flames billowed from his home.

The 52-year-old man turned and walked back into the burning building after police arrived and ordered him to surrender, according to CBS 5 in Las Vegas. Authorities later said they found three bodies in the burned rubble.

"Anyone who has been with law enforcement for any amount of time is usually prepared for any scenario," Sheriff Doug Gillespie told reporters at a press conference. "No one, however, can prepare for something like this."

Police declined to formally identify the victims until they are positively identified.

This video is from CBS 5 in Las Vegas, aired January 21, 2013.



Photo: Screenshot via CBS 5 in Las Vegas.