A woman was killed in San Francisco Thursday evening, after she fell from a cliff at Fort Funston.

San Francisco Fire Department spokesperson Lieutenant Jonathan Baxter tells CBS 5 that the incident was reported via 911 at 4:30 p.m. Thursday.

The woman, since identified by the Chron as 36-year-old Tracy resident Arezoo Yusufi, was standing to the side of one of the area's hang gliding platforms before the fall, CBS 5 reports.

According to ABC 7, "The victim was apparently alone --- and it is unclear how she fell."

"It's a 300 foot fall," Baxter told ABC 7. "We started life-saving measures...unsuccessful."

The platform itself has a safety barrier, CBS 5 reports. According to NBC Bay Area, "There are signs along the trails warning walkers to stay away from the edge. A lot of footprints also can be seen in those dangerous areas."

“Cliffs anywhere are going to be dangerous," Baxter told CBS 5, "That’s why your San Francisco Fire continuously puts out cliff- and surf-rescue warnings which we did today as well. If you’re going to be in the area you need to stay away from the cliffs."

"Our hearts go out to the victim and her family," SF Fire Chief Joanne Hayes-White told ABC 7. "It's always good to have a buddy, or a partner when you're walking."

Related: St. Ignatius High School Student Killed In Fall From San Francisco Cliff