Description:In a shocking development, Nassau County Police said Saturday evening that the 21-year-old Hofstra University student who was gunned down in a home invasion was killed by police gunfire. She was fatally shot by accident in the head, police said.
Earlier Saturday, the suspect in the death of Andrea Rebello was identified as Dalton Smith, 30, who was on parole and has an extensive criminal record. He entered the home around 2:30 Friday with a ski mask covering his face, armed with a gun.(0:59)