The man suspected of murdering at least seven people, their bodies found in two different homes in Joliet, Illinois, died from a suspected self-inflicted gunshot wound after a confrontation with federal law enforcement in Texas, according to authorities. Agents with the U.S. Marshals Service located the suspect, 23-year-old Romeo Nance, Monday night in Natalia, a city in the Lone Star state some 1,200 miles away from the Chicago suburb where he carried out his deadly crime spree. It would have taken him at least 18 hours to drive between the two locations, though it’s unclear whether he has an…