PROSECUTORS say they will call up to 50 witnesses in their case against three girls accused of bullying an Irish classmate so relentlessly that she took her own life.

THREE US teenagers previously indicted for charges related to the bullying death of County Clare schoolgirl Phoebe Prince entered not guilty pleas at a Massachusetts Court.

TRAGIC Irish teenager Phoebe Prince felt like she was in a movie when she first arrived at her American high school last September.