Updated

A West Virginia man is facing four counts of first-degree murder after police say he fatally shot four people, including an elderly father and his son who were delivering newspapers when they apparently stumbled upon a drug deal gone wrong.

Authorities said 27-year-old Sidney A. Muller of Harrison County was arrested in Marion County, where police said he had fled after the early-morning shooting Friday in a Clarksburg neighborhood.

Harrison County Prosecuting Attorney Jack Shaffer said officers found 29-year-old Todd Russell Amos of Clarksburg dead at the scene. Christopher A. Hart, 26, was found injured and died on the way to the hospital. Shaffer said the shooting, at Hart's address, "was directly related to drug activity."

Also found dead were two bystanders: Freddy Donald Swiger, 70, and his son, 47-year-old Fred Swiger. The two Harrison County men were delivering The Exponent Telegram, as they had done as contractors for about 30 years.