SCHLESWIG, Wis. (WFRV) - Deputies are investigating a head-on collision in Manitowoc County that left one man dead and an 18-year-old with 'serious' life-threatening injuries. According to the Manitowoc County Sheriff's Office, deputies and first responders were called to the area of CTH X and Louis Corners Road in Schleswig for reports of a two-vehicle head-on collision on September 20 around 4:55 a.m. Longtime partner of drag racer killed at Wisconsin International Raceway speaks out The preliminary investigation showed that an eastbound vehicle on CTH X collided head-on with a westbound vehicle. The eastbound vehicle was driven by an 18-year-old man from Malone and the westbound car was driven by a 72-year-old man from Kiel. Deputies say the 72-year-old man was pronounced dead at the scene and the 18-year-old was taken to a local hospital via ThedaStar with 'serious' life-threatening injuries. The release notes that the incident continues to be an active investigation and no additional information is being released at this time. Passerby alerts authorities to Green Bay house fire, damage estimated at $65,000 The following agencies assisted the Manitowoc County Sheriff's Office with the crash: Kiel EMS Kiel Fire Department Kiel Police Department Manitowoc County Coroner’s Office Manitowoc County Highway Department Manitowoc County Joint Dispatch Center New Holstein Fire Department ThedaStar Wisconsin State Patrol Local 5 will update this story when more details are provided.