An 84-year-old woman died Tuesday morning after being struck by a vehicle in San Francisco’s Richmond District, authorities said.

The incident occurred at 6 p.m. at the intersection of 46th Avenue and Cabrillo Street. The pedestrian was crossing the road when the vehicle struck her, police said.

She was taken to a local hospital and died of her injuries around 8:30 a.m. Tuesday. The medical examiner’s office identified her as Nancy Ng, a San Francisco resident.

“All parties remained on scene and are cooperating with investigators,” said Officer Adam Lobsinger, a San Francisco Police Department spokesman.

Gwendolyn Wu is a San Francisco Chronicle staff writer. Email: gwendolyn.wu@sfchronicle.com Twitter: @gwendolynawu