Published: Friday, May 3, 2002 Teacher, teen found Associated Press SAN BERNARDINO - A high school science teacher and a 15-year-old student who disappeared when their relationship came under investigation were found in Las Vegas on Thursday, authorities said.Tanya Hadden, 33, was being held in Nevada and the teen, Richard Pena, was to be returned to his family in Southern California on Thursday evening, said Lt. Frank Mankin of the San Bernardino Police Department.Las Vegas police found the pair staying at the Frontier Hotel after San Bernardino police alerted them that the two might be in the Las Vegas area.Pena's...