A head-on collision on Iowa Highway 28 killed one person and injured three others last Tuesday, according to police reports.

The fatal accident occurred around 4:20 PM when a southbound 2000 Mercury Marquis crossed the median into oncoming northbound traffic.

The 62-year-old Norwalk woman driver of the sedan crossed over a raised median and ran headlong into a 1990 Jeep Cherokee driven by an 18-year-old man from Norwalk. The impact killed a 28-year-old woman who was riding in the passenger seat of the jeep.

The drivers of both vehicles along with an 18-year-old man in the backseat of the jeep were taken to Des Moines area hospitals for treatment. All there are reportedly in critical condition.

The Iowa State Patrol is still investigating the accident and as of now the reason why the sedan crossed the median is unknown.