Farwell, 41, was found guilty on two counts: one for killing the 23-year-old Birchmore and another for causing the death of the fetus she carried. Each charge carries an automatic life sentence. He will remain in federal custody until his sentencing, scheduled for Feb. 3.

The verdict brings an end to a case that had drawn intense local scrutiny and raised troubling questions about how law enforcement handled the death of a young woman who had been involved with a police officer.

During the trial, prosecutors presented evidence that Farwell entered Birchmore's apartment on the night of her death, playing security video that showed a figure wearing a hoodie and a mask over his face. The trial also delved into what prosecutors described as a pattern of sexual exploitation and a subsequent effort to conceal wrongdoing.

The case had been closely watched by community members, some of whom gathered outside the federal courthouse in Boston. Supporters of Birchmore were seen embracing after the guilty verdict was announced.

Ray Cosgrove, a cousin of Birchmore, spoke at a news conference following the verdict, standing alongside U.S. Attorney Leah Foley.

The conviction marks a significant moment for accountability in a case that has shaken trust in local law enforcement. Birchmore's death, and the circumstances surrounding it, had long been a source of anguish for her family and advocates who demanded justice.

Farwell's sentencing is set for Feb. 3, when he is expected to receive the mandatory life term.