A woman was in critical condition Thursday after being hit by a bicycle in Central Park, police said.

The bicyclist collided with Jill Tarlov, 59, on West Drive near 63rd Street about 4:30 p.m., a law enforcement official said. Tarlov slammed her head into the ground. She was taken to NewYork-Presbyterian Hospital Weill Cornell Medical Center, police said.

The rider had been on a yellow racing bike. "She was walking in Central Park. She was in the crosswalk," said a man who identified himself as her husband.

No charges had been filed as of Thursday evening.