Huntington Beach officials are investigating the cause of a crash that left a pedestrian dead.

Robonna De Nies, 71, of Huntington Beach, died Saturday after a pickup truck hit her near Five Points Plaza, according to the Orange County coroner's office.

Police officers and firefighters responded to Main and Florida streets at 11:25 a.m. and found De Nies lying partially underneath a black Toyota Tundra, according to a press release from Huntington Beach police.

She was transported to UCI Medical Center, where she died from her injuries at 12:20 p.m., according to the coroner's office.

Police interviewed the truck's driver, who was later released. No arrests or citations were made.

Anyone with information about the crash can call investigators Tai Huynh at (714) 536-5370 or Robert Barr at (714) 536-5666.

— Anthony Clark Carpio

Twitter: @acocarpio