Updated

Authorities in Louisiana say a man who shared a mobile home where four people were killed has been charged with first-degree murder in their deaths.

Calcasieu (KAL'-kuh-soo) Parish Sheriff Tony Mancuso said Tuesday that investigators believe 52-year-old Lee Roy Williams Jr. acted alone. The sheriff described the killings as "brutal murders" but he wouldn't say how they were killed Sept. 3.

He also says Williams may have sold or traded some important evidence, though he wouldn't describe the items.