Convicted Killer on Trial for Murder 

Trial begins in Rockland Monday for a convicted killer accused of murder.49-year-old Frank Higgins is accused of killing Lloyd Millett, another state prison inmate.State police say Millett, who was also a convicted killer, was assaulted at the Warren prison on May 24th, 2011.He died two weeks later.Higgins was convicted of killing a woman in her home in Kenduskeag in 1999. He is serving a 45-year-sentence for that crime.The time could increase to life behind bars, if Higgins is convicted of murdering Millett.