Police say a 15-year-old student is accused of making a bomb threat against a Bronx educational complex Monday, which turned out to be a false alarm. Authorities say they were notified of the threat by officials at the Bathgate Educational Complex on Bathgate Avenue.Officials say it has been determined that the threat was a false alarm and that no one was injured.Students were allowed to return after being evacuated while authorities searched the campus. The 15-year-old student was charged with false reporting and aggravated harassment.