Shelton police are investigating a bomb threat against Shelton High School that was called in on Thursday afternoon and they are looking for the person responsible.
Police said the threat was specific and the school district received the call just before school dismissal time.
Police, fire and school officials investigated and nothing threatening was found during the search, police said.
Students were allowed to leave school at the regular time and police and fire officials monitored the dismissal.
Police are working with school officials to identify the person who made the threat.