A 15-year-old Montgomery Village girl was taken to the hospital with life-threatening injuries after she was struck by a car while riding her bike Thursday morning.

At 6:54 a.m. Thursday, Nicole Marie Polen and a 16-year-old friend were crossing Woodfield Road at the Airpark Road intersection when Polen was hit by a 2004 Nissan Sentra traveling through the intersection on a green light, Montgomery County police said.

Police said Polen was wearing a helmet and was in the crosswalk but was crossing the street against a pedestrian signal. Polen's friend, whom police did not identify, was not injured in the incident.

Polen, a rising sophomore at Gaithersburg High School, was taken to a local hospital in "serious condition," police said. The Sentra's driver, William Earle Maselas, 30, of Olney, was not injured in the incident but remained on-scene after the accident and spoke with police.

Police are still investigating the incident, and witnesses can call 301-840-2435 with any information.