JERUSALEM (AP) - Liviu Librescu survived the Nazi Holocaust. He died trying to keep a gunman from shooting his students in a killing spree at Virginia Tech - a heroic feat later recounted in e-mails from students to his wife.

Librescu, an aeronautics engineer and teacher at the school for 20 years, saved the lives of several students by using his body to barricade a classroom door before he was gunned down in Monday's massacre, which coincided with Holocaust Remembrance Day. His son, Joe Librescu, told The Associated Press on Tuesday that his mother received e-mails from students shortly after learning of her husband's death.

"My father blocked the doorway with his body and asked the students to flee," Joe Librescu said in a telephone interview from his home outside of Tel Aviv. "Students started opening windows and jumping out."