It is my judgment that this individual considered that something to be glorified and was doing so," he said. Two students opened fire at Columbine High School in Littleton, Colorado, on April 20, 1999. They killed 13 people and wounded 23 others before killing themselves. The 14-year-old is expected to appear in juvenile court Friday to face charges that could include making terroristic threats, criminal solicitation, weapons possession, and possession and manufacturing of weapons of mass destruction, police said. If he's found delinquent, he could face jail time and counseling. The boy's mother and father may face criminal charges pending an investigation, police said. "I don't see any evidence that leads me to conclude that she knew that this attack was planned or anything of that nature," Castor told "Anderson Cooper 360." But he said he thinks charges against the mother are likely. "I think you have a parent who has fallen down on the job in supervising the child, perhaps indulgent on the child because she knows he has issues." Police acted on a tip they received at 7:30 p.m. Wednesday from a Plymouth Whitemarsh High School student and his father, school officials said. The 14-year-old was taken into custody at his home about 10 p.m. "The boy who gave the tip was one who was trying to be recruited," Castor added. "He was a friend of the boy in the loosest terms." Officials said they think the tip was prompted by Wednesday's shooting at a school in Cleveland, Ohio. "We have no information at this point that leads us to think this is other than an isolated individual who was trying to recruit others to help," Castor said. School officials said the boy is not a student at the school. "This was a youth in the community who has not been enrolled in school since spring of 2006," according to Dave Sherman, spokesman for Plymouth Whitemarsh High School.