CHARLOTTE, N.C. -- Lisa Mayfield, the stepmother of Jeremy Mayfield and a witness for NASCAR in defending its suspension of the Sprint Cup driver, was arrested Saturday night after an incident at her stepson's Catawba County house.
According to Catawba chief of police Cecil Cook, Lisa Mayfield was charged with public intoxication and had warrants issued for four counts of simple assault and second-degree trespassing.
She spent Saturday night in jail and was released Sunday after making a $5,000 unsecured bond, Cook said.
The arrest was made at the home of Jeremy and Shana Mayfield. According to Shana Mayfield, she and her husband were on their way to Cherokee Speedway in Gaffney, S.C., for a dirt-track race when they received a call from a couple that lives on their property.
Shana said the couple heard banging on the door and went to the house to investigate. She said by the time she and Jeremy arrived back at the house, Lisa Mayfield was in handcuffs.
At that point, Shana Mayfield claimed that Lisa Mayfield threatened to come back and "kill me."
"According to the officers she was pretty high," Cook said. "The officers took her to jail on public assistance ... to make sure she didn't cause problems to anybody or herself. The Mayfields came up [to the magistrate's office] and took charges out. She was arrested on those charges while in jail."
According to Tommie Coulter, the supervisor of the Catawba Clerk of Court's office, the warrant issued accused Lisa of using her fist or foot to assault Jessica Jorgensen, Christopher Gerren, Damian Bone and Madeline Bone. Cook said officers at the scene did not witness any confrontation.
The incident, according to the complaint, took place around 8:30 p.m. A court date has been set for Sept. 14.
Lisa Mayfield became a part of NASCAR's case to get her stepson's suspension reinstated after a federal judge granted a temporary injunction. She signed an affidavit saying she saw Jeremy Mayfield use methamphetamines at least 30 times since 1998.
She also said her stepson "cooked" his own methamphetamines until it became too difficult to obtain the ingredients.
Jeremy Mayfield was suspended by NASCAR on May 9 after testing positive for methamphetamines during a random drug test taken eight days earlier. He tested positive again during a random drug test taken at his home after the suspension was lifted, according to court records filed by NASCAR.
Mayfield disputes the positive tests. He has argued that the result came from combining Claritin-D for allergies with the prescription drug Adderall for attention deficit hyperactivity disorder.
NASCAR presented the second test and Lisa Mayfield's testimony in court documents to keep Jeremy off the track.
Jeremy Mayfield, in response to the court filing, argued that his stepmother's testimony was not trustworthy. He accused her of killing his father, who committed suicide in 2007, according to police reports. He also accused her of accepting money from NASCAR in exchange for her testimony.
Lisa Mayfield has filed a civil suit against her stepson for defamation of character.
David Newton covers NASCAR for ESPN.com. He can be reached at email@example.com.