LOS ANGELES (CBSLA.com) — Authorities say an 8-year-old girl has died after a car plowed into a South Los Angeles home.

The single-vehicle crash Sunday in the 700 block of E. 93rd Street also left four others injured.

Police said the driver of the vehicle, described as a woman in her 30s, was speeding down McKinley Avenue when she lost control and crashed into a brick wall and fence before slamming into the wall of a home.

Witnesses said she was unconscious and trapped inside the car after the crash. She and three boys — between the ages of 18 months and 6 — were transported to the hospital.

All were said to be in critical condition. No one inside the home was injured.

The driver, described as the children’s mother, has been arrested on a DUI charge, police said.

KCAL9’s Brittney Hopper spoke to witnesses and some neighbors who were first on the scene.

“I ran over immediately,” said Greg Thomas, “and all the kids were in the car and started pulling them out.”

Thomas and his fiance started doing CPR on the injured children.

“It’s sad to know we couldn’t do more for the little girl,” said one witness.

Officials told Hopper that no one in the car was wearing seat belts.

Authorities said an 18-month-old boy was in a car seat but allegedly not strapped in.

“I don’t feel like it hasn’t really hit me hard yet. But to know that the baby girl is gone, and [the mother] is going to wake up and her girl isn’t going to be there. It’s a tragedy,” said Mariah Garcia, Thomas’ fiance.