WAUSAU — A 28-year-old Wausau woman is being accused of child neglect after toxicology results showed methamphetamine in the hair of a 4-year-old child.

An investigation into the child’s well being began in May, after the woman was involved in a theft case, according to a Wausau Police report.

Investigators can test the hair of children to detect passive exposure to drugs and provide evidence of substance abuse in a child’s environment for a three-month span, according to the U.S. Drug Testing Laboratories. Tests can be performed on children of any age.

The name of the suspect has not been publicly released.

Wausau Pilot & Review will continue to report on this story as details become available.