A man allegedly stole his friend's car after they got into an argument in San Francisco's Mission District late Thursday night, police said.
The carjacking was reported at about 11:30 p.m. near the intersection of Cesar Chavez and Shotwell streets.
The victim, an 18-year-old woman, is friends with the suspect and the pair were driving in the woman's car, a 2005 gold Chevrolet Malibu, according to police.
When the woman pulled over during the argument, the suspect forced her out of the vehicle and into the street, then got into the driver's seat and drove away, police said.
He had not been found as of Friday morning, according to police.
Anyone with information about the case is encouraged to call the Police Department's anonymous tip line at 415-575-4444 or send a tip by text message to TIP411.