A man is behind bars after he allegedly tried to steal a woman's purse but a Good Samaritan stepped in to help her.
Alamo police arrested 29-year-old Ruben Gonzalez on a criminal attempted robbery charge late Sunday night.
Investigators told Action 4 News that Gonzalez followed a woman leaving a WalMart store off Cesar Chavez Road around 11:30 p.m.
Gonzalez got in a struggle with the woman when he allegedly tried to steal her purse.
Alamo police said a Good Samaritan saw what happened and stepped in prompting Gonzalez to jump into a white Chevrolet Impala and flee the scene.
Officers located the car and arrested Gonzalez.
Police are still investigating the incident and waiting for a postive identification of the driver.