A woman had to be flown by medical helicopter to the hospital on Sunday after she was struck by a car while riding her bike in Weston, Massachusetts.

The Weston Fire Department says it received calls just before 4 p.m. for a motor vehicle versus a bicycle in the area of Boston Post Road and Fiske Lane. First responders were on scene within a minute and found a 58-year-old woman seriously injured after she had been struck by a midsize sedan.

She was treated on scene and then flown by Boston MedFlight to a Boston trauma center in serious condition, the fire department said.

Officials did not provide any details on the driver.

The crash is under investigation by Weston police.