The incident happened at about 5:30 p.m. Saturday on the 100 block of East 47th Street. A 10-year-old girl and her brothers, 6 and 4 years old, were hit by a blue car.
They're all expected to be OK, but police are hoping witnesses will have information that can help them find the driver.
If you know anything that might help investigators, you're urged to call (877)-LAPD-24-7 or (877) 527-3247.
City News Service contributed to this report.