Indiana State Police troopers are investigating after six people were killed in a house fire in Indiana.According to the Indiana State Police, detectives from the Versailles Post were called to investigate an early-morning house fire on Lewis Drive in Switzerland County.Around 3 a.m. Saturday, the Switzerland County Sheriff's Office received a report of a house fire in the 9500 block of Lewis Drive. When officers arrived,they found the house fully engulfed. After extinguishing the fire,officials discovered six people dead in the house.One man was able to escape without injury after the fire started. The coroner's office is working to identify the six victims.The Indiana Fire Marshal's Office is working to determine the cause of the fire. No foul play is suspected at this time, officials say.The investigation is ongoing.