A vehicle struck a curb while exiting the 60 Freeway in Walnut, rolled over, and crashed through the fence of a home and landed in a backyard pool, authorities said.
The crash was reported about 2:25 a.m in the 20900 block of Moonlake Street, according to the Los Angeles County Sheriff's Department.
The vehicle was traveling at a high rate of speed when the driver lost control and struck a curb while exiting at Brea Canyon Road. The vehicle rolled over and crashed through the fence of a home, landing in a pool, the department said.
The driver was taken to a hospital in unknown condition.
No other injuries were immediately reported.