Surveillance video captured the moment when a woman was carjacked at knifepoint at a West Hills gas station Saturday morning.

Noel Perry said she and her brother pulled into a Chevron at Fallbrook Avenue and Vanowen Street at 8 a.m.

"He went in to go get a coffee and I was pumping the gas, and a guy came from across the street," Perry said.

Police said the man had allegedly just tried to carjack another woman in a Red Lobster parking lot before approaching Perry's Toyota Camry.

The man looked in the Camry's passenger side and then walked around to the front. That's when Perry said she saw him holding a knife.

"All he said was, 'Move,'" Perry said. "I ran."

She then watched as the carjacker drove out of station.

"It just was an awful feeling of helplessness, like there's nothing you could do about it," Perry said.

She said she is out of a car because her insurance won't cover it.

Perry's purse, wallet, driver's license and credit card were in the front seat of the stolen car. However, a man in Van Nuys reached out to her to return her purse. He told her he had picked it up from the street after it was thrown out of a car window.