article_snippet.sent: This kid's obviously a fighter,John Walker John Walker said during a Saturday news conference.
article_snippet.sent: When police tracked down his mother, his mother told police his mother son was with his mother, John Walker said.
article_snippet.sent: her boyfriend in Maryland was not aware of what happened, John Walker told CNN affiliate KYW-TV.
article_snippet.sent: John Walker told reporters John Walker bore "clear criminal liability in this case.
article_snippet.sent: Maryland police took John Walker into custody on Sunday, and John Walker will face the charges in Philadelphia following an extradition hearing, WPVI reported.
article_snippet.sent: his mother's arrest was only the beginning of the investigation, John Walker told reporters.