Former U.S. Soccer star Hope Solo pleaded guilty to a charge of driving while impaired on Monday while calling her action the "worst mistake of my life."

Solo was arrested in Winston-Salem, North Carolina on March 31 on charges of suspicion of driving while intoxicated, resisting arrest and misdemeanor child abuse. Police say they found Solo passed out behind the wheel with the engine running in a Walmart parking lot with her two children in the car, according to the Forsyth County District Attorney’s Office.

Prosecutors say she refused a field sobriety test and breathalyzer and that a blood test revealed that she had a blood-alcohol level of 0.24, three times the .08 legal limit. She also had THC in her system, according to prosecutors.