The crime occurred at the facility in the 3400 block of Honolulu Avenue on Dec. 12, the Los Angeles County Sheriff’s Department reported.
“The minor victim was coming out of the bathroom at Crescenta Valley Skate Park … when she was grabbed and sexually assaulted by the suspect,” the sheriff’s department said in a statement.
“The suspect fled the location on foot westbound over the pedestrian bridge towards the wash and out of view,” the statement said.
The man was described as Hispanic or Middle Eastern, 25-40 years old, 5 feet, 6 inches to 5 feet, 8 inches tall, with a thin build and a light complexion.
He was wearing a blue surgical mask, a plain brown hat and a pair sunglasses with green-and-blue reflective lenses on the bill of his hat. He also wore a white hooded puffy vest, a long-sleeve white shirt underneath the vest with reflective tape on the left arm, and loose dark-colored pants.
Anyone with information about the case was urged to contact the sheriff’s Special Victims Bureau by calling 877-710-5273 or via email at firstname.lastname@example.org. Tipsters may also call Crime Stoppers at 800-222-TIPS.