Charred human remains have been found in a burned-out cabin where a fugitive former police officer was believed to be, US police have confirmed.

A man police believe to be the fugitive ex-Los Angeles officer wanted for three killings was barricaded inside a burning cabin today after a shootout in a California mountain town that left one deputy dead and another wounded.

A fugitive ex-Los Angeles cop sought in three killings was barricaded in a cabin in the San Bernardino Mountains last night after a shootout with authorities that wounded two officers.