Police in Pennsylvania said they are investigating an incident at a school in which they said a 14-year-old girl with a severe pineapple allergy was intentionally exposed to the fruit by another student. The incident happened during the lunch period at Butler Intermediate High School on Dec. 13. Police said the person responsible is also a 14-year-old girl.The victim was taken to the hospital after being exposed to the pineapple and was treated and released the same day, police said.The suspect is facing several charges, including aggravated assault.Two other girls, ages 13 and 14, were charged with conspiracy and other offenses.The girls were not identified because they are juveniles.The Butler Area School District released the following statement Thursday afternoon:"As with all student discipline issues, we are unable to provide a comment on the specific incident. However, it is our expectation that our students respect themselves and others. When that does not occur, the district will take appropriate disciplinary action and, if appropriate, contact law enforcement."