jetcityimage via Getty Images The shooting left a 55-year-old woman with a gunshot wound to her neck, Dallas police said.

A child custody swap between two grandmothers led to a shootout outside of a Dallas Walmart that left one woman wounded, authorities said.

The two women met to transfer custody of their mutual grandchild around 5:30 p.m. Sunday. An ensuing argument turned violent, Dallas police said.

Janice Brown, 53, allegedly pulled out a gun and shot Carla Hawkins, 55, in her neck, leaving her with injuries that were not life-threatening, police said in a statement.

An off-duty Fannin County officer responded to the scene. Brown allegedly shot at the officer, and he returned fire. No one was harmed during that exchange, police said.

Brown was taken into custody and charged with aggravated assault on a public servant. Charges related to Hawkins’ shooting will be referred to the Dallas County Grand Jury, police said.

Authorities had not made any further information available as of Tuesday morning.