The decision, which resulted from a hung jury, means the prosecution can decide whether to try her again. The defense failed to secure a stay of the decision from a higher court.

The defense argued that Judge William Sullivan should investigate a lone holdout on the jury before declaring a mistrial, which would allow the prosecution to continue to pursue a murder conviction. A...

The judge’s decision came after jurors sent another note saying they had not been able to reach a verdict. The judge gave the defense an hour to request a stay.

The actual prevalence, researchers said, may be much higher.

Lorenzo Salgado Araujo hoped to obtain legal status, his family said. He was killed last week by an immigration agent who was looking for a different man.

Investigators had for months refused to share information with their state counterparts about three shootings involving federal agents.

The killing occurred in Biddeford, about 20 miles south of Portland. The Trump administration has stepped up immigration enforcement nationally in recent weeks.

At block parties, backyards and beer halls, an expanded tournament gave immigrant diasporas large and small the chance to revel in support of their home countries.

YouTube video by Cinema Crunch

A moment-by-moment analysis of video from the scene shows that Mr. Pretti was already restrained when fatal shots were fired, which appears to contradict the federal government’s account of the event.