A suspect drove off with a woman's vehicle while her two children were inside Friday evening in south Dallas.

It happened in at the 7-Eleven gas station at 5950 South R.L. Thornton Freeway, shortly before 8:30 p.m. A woman ran into the gas station, saying someone had just taken her car with her children, a 6-month-old and 2-year-old, inside.

Police learned that the woman knew the suspect and that she and suspect had gotten into an argument before the suspect fled with her car, according to a police news release.

At some point during the argument, the suspect threatened the woman with a weapon and assaulted her, police said. The woman got out of the car, and the suspect drove off.

Police began searching for a 2010 white, four-door Mazda door with paper plates. They later tracked the stolen car about less than 2 miles away at a shopping strip on E. Ledbetter Drive.

The two children were safe and were being examined by the paramedics Friday night.

Dallas police were still searching for the suspect.