FERGUSON, MO. (AP) — Police in suburban St. Louis have arrested a person suspected in a hit-and-run that killed a 4-year-old boy and injured a 2-year-old.

Police say the crash happened Friday night at an intersection near Ferguson when a black sedan hit a stroller carrying the two children being pushed by an adult. Police say the car sped off after hitting the stroller.

Both children were rushed to a hospital, where 4-year-old Tavares Chisholm, of St. Louis, was pronounced dead. The 2-year-old was treated at a hospital for injuries not believed to be life-threatening.

St. Louis County police say a suspect was arrested Saturday morning and that police had found the car believed to have hit the children. The suspect’s name has not been released.