A Glenwood man was seriously injured in a crash in Mankato Monday evening that involved a Mankato police officer. It happened at 8pm at the intersection of Riverfront Drive and Hickory Street. 27-year-old Steven Gremmels of Glenwood was driving a Subaru Legacy westbound on Hickory Street when he collided with a Mankato Public Safety Ford Explorer on Riverfront Drive. Gremmels suffered serious injuries and was taken to the Mankato Mayo Hospital along with his two passengers, who suffered non life-threatening injuries. The officer involved in the crash, 27-year-old Christohper Arkell of Mankato was treated at the hospital and released. The State Patrol is assisting with the investigation into the crash.