The Oregon Department of Justice is opening a criminal investigation into allegations that senior officials in the state's alcohol regulatory agency violated ethics laws by diverting rare, sought-after bourbons for personal use, the state attorney general said Friday. The officials said they were paying for the whiskey, which can cost thousands of dollars a bottle, but they allegedly used their knowledge and connections at the commission to obtain the products, according to an internal investigation by the Oregon Liquor and Cannabis Commission. The practice had purportedly been going on for many years and involved not only state employees but also members of the Oregon Legislature, the OLCC investigator was told.