Authorities say the girls ran from the park when the incident happened, and the suspect walked away.
The man was described as white, in his 40s, about 6' tall, heavy build and clean shaven. He was wearing wire-rimmed prescription eyeglasses, a long-sleeve blue button-down shirt with a pocket on the left side of the chest and blue jeans.
Anyone with information about the suspect is urged to call the El Segundo Police Department at (310) 524-2284.
