Authorities heard a single gunshot as they prepared to rip down the final wall to the cabin in which its believed fugitive former LA cop Christopher Dorner had holed himself up in, the Los Angeles Times has reported.
A law enforcement source told the newspaper police had smashed windows, fired tear gas into the cabin and called for Dorner to surrender with a loud speaker.
After getting no response, police used a vehicle to rip down the cabin's walls "one by one, like peeling an onion," according to the official.
The gunshot was then heard and flames quickly engulfed the battered cabin, the official said.
More top news
It is the first time one of the ruling Kim leaders has crossed over to the southern side of the DMZ since the Korean War ended in 1953.
Amber Rudd feels the heat and a summer visit for Donald Trump raises fears of unrest.
Experts called on the Government to immediately tighten up fire regulations without waiting for the conclusion of the Grenfell inquiry.