BRASELTON, Ga. -- The search is over for a woman who police think could be the key to solving a fatal shooting.

Early Saturday morning, 56-year-old James Harold Walls was shot and killed at a Circle K on Hwy 124 after an argument that started in the parking lot of a Waffle House continued in the parking lot of a gas station. That's when a gunman shot Walls and drove off.

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Police said a woman Walls was seen with at the Waffle House and gas station heard the shooting while she was inside paying for gas. But it's what she did next that left police confused. They said instead of calling 911 for help, she got her purse out of Wall's truck, called a ride from the inside of the store and left the scene.

Investigators had been looking for the woman, who they thought could be the "key" to finding the gunman. They found her the next day after tracking Walls' cell phone, which police say Baker stole from inside Wall's truck.

Investigators are searching for suspects after Braselton Police said a man was shot in the chest at a gas station.

According to officials, Baker then met with a unidentified man, gave the phone to him and told him what happened. Police said the man tried to ditch the phone near Lake Lanier, but was also located and taken into custody.

Both Baker and the man were arrested by police. Police charged her with tampering with evidence for taking the phone. They did not release the charges for the man.

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