( CNN ) Police added attempted murder to the list of charges against the mother of a quadriplegic man who was left in the woods for days , Philadelphia police spokeswoman Christine O'Brien said Tuesday . Nyia Parler can not be extradited to face the charges in Philadelphia until she completes an unspecified `` treatment , '' Maryland police said Monday . When she does arrive , she will be charged with aggravated assault , simple assault , recklessly endangering another person and related offenses , in addition to the attempted murder count , O'Brien said . The Montgomery County ( Maryland ) Department of Police took 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 . For more than four days , police say , the quadriplegic man , who also suffers from cerebral palsy , was left lying in the woods of Philadelphia 's Cobbs Creek Park . Low temperatures reached the mid-30s during the week , and rain was reported in the area Wednesday and Thursday . The man is unable to communicate how he came to be in the park , but Philadelphia police Lt. John Walker told reporters that the man 's mother left him there the morning of April 6 . Starks identified the mother as Parler on Monday . `` The mother went to visit her boyfriend down in Maryland , over in Montgomery County , and we believe she placed the child into Cobbs Creeks Park , '' Walker said at a news conference . Walker told CNN the man was transported to Presbyterian Hospital , but CNN affiliates reported he was being treated at The Children 's Hospital of Philadelphia . He suffered eye problems , dehydration , malnutrition and a cut to his back that raised infection concerns , the lieutenant told reporters . `` This kid 's obviously a fighter , '' Walker said during a Saturday news conference . `` It 's just unbelievable how we found him out there last night . To see that kid laying there , it 's heartbreaking to see another human , especially a mother , can treat someone like that . '' Officials at Philadelphia 's School of the Future , which the man attends , became concerned when he did n't show up for classes last week and tried to contact his mother but eventually reached an aunt , Philadelphia police said . `` The aunt was in contact via text message with Nyia throughout the week and when she expressed her concerns about the complainant , Nyia replied , 'We 're OK , ' which the aunt believed meant that the victim was with Nyia in Maryland , '' according to a police news release . When police tracked down the mother , she told them her son was with her , Walker said . `` She indicated to both family members and the police officers that the child was with her down with her boyfriend in Maryland , '' he said . The boyfriend was not aware of what happened , Walker told CNN affiliate KYW-TV . Walker told reporters she bore `` clear criminal liability in this case . '' There was no reason for the man to suffer , Walker told philly.com , because the mother had sisters willing to take care of him . Two of his aunts , who have tried to obtain guardianship of him , were staying with him at the hospital , police told the website . Parler 's sister told police that Parler has another child , a 16-year-old . The mother 's arrest was only the beginning of the investigation , Walker told reporters . Authorities are interested in learning more about `` how this kid was cared for , and what actions were taken and providing of services by different agencies . '' CNN 's Chuck Johnston and Carma Hassan contributed to this report .
federal police add to hundreds to dozens of charges mother will face . Mom told police son was with her in jail , but he was found Friday alone in jail . after being treated for malnutrition , dehydration ; mother faces host of charges after extradition .