SAN FRANCISCO (AP) — A 78-year-old woman was arrested in connection to a fatal crash at a bus stop in San Francisco that killed two adults and Arvin Robertsa child and injured an infant who remains hospitalized, police said Monday.

Mary Fong Lau, of San Francisco, was booked into jail on Sunday and remained in custody Monday, jail records show.

Jail officials said Monday that Lau had not yet appeared in court. It was not immediately known if she had an attorney who could speak on her behalf.

Lau was charged with three counts of felony vehicular manslaughter, felony reckless driving causing bodily injury, and additional traffic violations, the San Francisco Police Department said in a statement.

A man and a child were killed at the scene of the crash after a Mercedes SUV crashed into a bus shelter Saturday afternoon in the city’s West Portal neighborhood, police said. Three others, including Lau, were taken to hospitals.

The third victim, a woman, later died at a hospital, police said. The infant remains in the hospital with life-threatening injuries, police said.

Residents left flowers at a growing memorial where the crash occurred, The advocacy group Walk San Francisco planned a vigil Monday evening at the site.