In the collision of two cars in Lippetal in the Soest district, three people were injured, including an eleven-month-old baby.
The child, his 30-year-old mother and a 56-year-old were taken to a hospital, a police spokesman said on Sunday.
The man ran into oncoming traffic with his car on Friday evening for an unexplained cause and collided with the 30-year-old driver's car.
Lippetal - The severity of the injuries was unclear on Sunday, according to the spokesman.
The cars were badly damaged in the accident.
dpa