Indiana State Police have arrested a person of interest in the murders of five people in rural Franklin County, about 60 miles southeast of Indianapolis. The man, arrested during a traffic stop, was wearing a disguise. He is being held in the Ripley County jail on an unrelated charge for the armed robbery of a pharmacy in Osgood. Investigators think the murders were the result of a drug deal. The victims were identified as Angela Napier, 47, and her son Jacob Napier, 18; daughter Melissa Napier, 23; and estranged husband Roy Napier, 50. All four were shot in the head and found in one home. Victim Henry Smith, 43, who suffered a gunshot wound to the chest, was found dead in a home across the street. Melissa Napier's 4-year-old daughter was found Sunday wandering down the road from the crime scene.