Two people targeted in separate carjackings in San Francisco

Two carjackings were reported over the weekend in San Francisco, police said. Two carjackings were reported over the weekend in San Francisco, police said. Photo: Sarah Ravani / Sarah Ravani / Photo: Sarah Ravani / Sarah Ravani / Image 1 of / 28 Caption Close Two people targeted in separate carjackings in San Francisco 1 / 28 Back to Gallery

Two carjackings were reported in San Francisco, including one in which the victim jumped on top of his vehicle in an unsuccessful attempt to stop the thieves from driving off, police said Monday.

A 61-year-old woman was loading bags into her car on Silliman Street near San Bruno Avenue just before 2 a.m. Saturday when a man in his 30s demanded her keys, according to the San Francisco Police Department.

She complied after he threatened her, and the car was later found abandoned after the thief crashed it into a parked vehicle in the Outer Mission, police said. No arrests were made, and the victim was not injured.

In an unrelated carjacking early Monday, a 40-year-old man in the Mission left his car running in his driveway in the 3100 block of 24th Street around 1:30 a.m., police said.

As he left the car to open his garage, two teenage girls jumped into the car, police said.

The man jumped on top of the vehicle as the suspects drove away, but he rolled off when they showed no signs of stopping, police said.

The man had minor injuries, police said.

The car was not recovered, and no arrests were made.

Michael Bodley is a San Francisco Chronicle staff writer. Email: mbodley@sfchronicle.com. Twitter: @michael_bodley