VIDEO: A death investigation is underway in Eau Claire Monday, after a body was found over the weekend. Eau Claire Police and Fire Department responded to a fire on Congress Street early Saturday morning. When firefighters entered the home, they found the body of 21-year-old Jaime Thayer-Vega. Police were called to the residence for a report of an intruder and the home was on fire. A tenant saw the intruder, later identified as Thayer-Vega, in his home and there was a physical confrontation. The tenant then notified the other occupants of the fire, and they were able to make it out of the residence safely. Thayer-Vega was not known to any of the tenants.