Walmart Heiress Arrested for DWI on Her Birthday
10/13/2011 AT 02:35 PM EDT
Walton, who refused a breathalyzer, "was determined to be intoxicated during a field sobriety test," according to Senior Trooper Gary Rozzell.
She was booked into the Parker County Jail after 11 p.m. Friday, reports the local news, and released on $1,000 bond around 8 a.m. on Saturday. Walton is listed by Forbes as worth $20.9 billion, the 10th richest person in the U.S. and 21st in the world.
Her attorney, Dee J. Kelly, said in a statement: "She was returning home from a birthday dinner with friends at a Fort Worth restaurant. She accepts full responsibility for this unfortunate incident and deeply regrets it."