A US student is in trouble after a porn movie soundtrack began blasting out during a Roman Catholic school's morning assembly.The sounds suddenly started spilling from the public address system at the Immaculate Heart Central School in Watertown, New York state.It happened during a "get acquainted" session for new principal Lisa Parsons to meet 13 to 18-year-old students, reports WWNYTV.com.Ms Parsons would not confirm what was heard, describing it only as an "unfortunate incident" that was "shocking".But sources told 7 News that what sounded like pornography blared from the school's public address system for several minutes.The student responsible was identified, Ms Parsons said. She said no action has been taken so far, although other reports to 7 News said the student had been expelled.Ms Parsons said the parents of all students affected had been contacted. She said the incident "upset people" and she was "deeply concerned about the children".Source: orange news