Story highlights Mother must complete "treatment" before she can be extradited, Maryland police say

Mom told police son was with her in Maryland, but he was found Friday alone in woods

Victim being treated for malnutrition, dehydration; mother faces host of charges after extradition

(CNN) The mother of a quadriplegic man who police say was left in the woods for days cannot be extradited to face charges in Philadelphia until she completes an unspecified "treatment," Maryland police said Monday.

The Montgomery County (Maryland) Department of Police took Nyia Parler, 41, into custody Sunday after Philadelphia police reported that she left her 21-year-old son in the woods while she hopped a bus to see her boyfriend in Maryland. A man walking through the woods found him Friday "lying in leaves, covered in a blanket with a Bible and a wheelchair nearby," Philadelphia police say.

Citing federal health care privacy laws, Montgomery County police spokesman Capt. Paul Starks said he could not divulge why Parler was receiving treatment, but he said she had to complete it before she could be extradited.

She remained in treatment as of Tuesday morning, Starks told CNN.

If she chooses not to challenge her extradition, she will be transported to Philadelphia once the treatment is complete, he said.