Cody Randalle Harper and Allison Hong Pham (Cascade County Detention Center booking photos)

GREAT FALLS – Cody Randalle Harper and Allison Hong Pham have been charged with endangering the welfare of a child (felony) after two of their children tested positive for exposure to meth and THC.

Court documents state that a Great Falls police officer was assigned to investigate in September 2017 after receiving a report about them from a Child Protection Specialist with the Montana Department of Public Health & Human Services.

The report stated that the couple’s new-born son tested positive for THC, and their 1-year old daughter tested positive for meth.

Authorities tested a hair sample from the daughter, and cord blood from the infant.

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Results indicated that the infant had been exposed to cannabinoids, and the daughter had been exposed to meth and THC*.

When asked how their daughter could have been exposed to meth, Harper responded that it was possible she had been exposed from skin-to-skin contact after he and Pham had used meth.

According to court documents, Pham said that their meth use does not occur in their apartment, so she did not know how the child could have been exposed to it.

Harper and Pham are both charged with one felony count of endangering the welfare of a child.

* THC, or tetrahydrocannabinol, is the chemical responsible for most of marijuana’s psychological effects, according to LiveScience.