SIOUX FALLS, S.D. — A South Dakota man was arrested Thursday for robbing a woman who gave him a ride Wednesday. 

All because he happened to walk into the store where she works. 

The 18-year-old victim was giving Jacob Zean, 19, and three others a ride from Keuhn Park in Sioux Falls, S.D., on Wednesday. When the victim stopped at their location, one person in the backseat pulled a gun on the victim, and Zean, in the passenger seat, took the victim's cash and phone, said police spokesman Sam Clemens. 

The victim didn't call police right away, Clemens said. Thursday, she saw Zean and the suspect who pulled the gun in the store where she works at in the mall. She notified mall security, who found Zean hiding in the bathroom. They waited outside until police arrived. 

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The second suspect had left the mall. 

Police are still looking for the other suspects. 

Zean was charged with first-degree robbery and false impersonation. According to jail logs, he was also charged with possession of marijuana and drug paraphernalia.