The Lawrence Police Department is investigating after a man with a bicycle was struck by a vehicle and seriously injured in eastern Lawrence late Sunday night.

Police and medical crews were called to the area of Venture Park Drive and Venture Park Court at 11:56 p.m., according to Sgt. Amy Rhoads.

When police arrived, they discovered that a 40-year-old man on a bicycle had been struck by a 20-year-old man driving a gray Nissan Altima eastbound on Venture Park Drive, Rhoads said.

A LifeStar helicopter landed near the crash scene and took the man to the University of Kansas hospital in Kansas City, Kan. Rhoads described his injuries as serious and life-threatening. He was last reported in critical but stable condition, she said.

The accident investigation is ongoing.

Operation 100 News contributed to this report.