A Johns Island man is in jail after his wife said he threatened to kill the family if she reported that he had abused a child.

Melvin O. Walker, 46, of Cane Slash Road on Johns Island was arrested Monday and charged with criminal domestic violence, first-degree criminal sexual conduct and a lewd act on a minor. He is being held in the Charleston County jail.

The Department of Social Services contacted the Charleston County Sheriff’s Office on Thursday because of allegations that Walker had abused a child, according to an incident report and affidavits from the Charleston County Sheriff’s Office.

The child reported the abuse at school and then described at least two incidents of sexual abuse to a forensic interviewer at Lowcountry Children’s Center, according to the documents.

Melissa Walker, Walker’s wife, removed the children from the home and stayed with friends while the allegations were investigated. Walker became enraged when he found out Friday and threatened to kill the family, his wife told deputies.

“If I go to jail, I will get out on bond, and I will kill you, I will kill the kids, and then I will kill myself,” Walker told his wife, according to a detective’s affidavit.

That threat resulted in the criminal-domestic violence charge.

Melissa Walker spoke out in bond court Tuesday night. She said she and Walker had been married for 13 years and she was tired of trying to help him.

“He’s never going to change,” she said. “I’m in fear of our lives. Enough is enough.”

Magistrate Alvin Bligen set Walker’s bail at $2,505 on the criminal- domestic violence charge and $100,000 on the criminal-sexual conduct charge. The judge denied bail on the charge of lewd act on a minor, which must be addressed by a circuit judge.

Reach Dave Munday at 937-5553 or twitter.com/dmunday.